The chapter Electromagnetic induction and Alternating currents have an eight per cent weightage on the NEET exams. So, the chapter is really quite significant, so it is important that you study well for it. If you are looking for important questions, you don’t need to look that far.
Students preparing for the NEET test should study all of the major chapters of the NEET curriculum in order to achieve the best results in NEET 2020. Essential questions for NEET 2020 are one of the most dependable study materials since they cover all of the major topics in the curriculum. These significant questions are also produced by evaluating past years’ question papers and taking into account the importance of each chapter in the syllabus. Here you’ll find all of the crucial NEET physics problems from the section Electromagnetic Induction, along with their answers, so you may do better in the test.
One of the best educational academic specialists have developed these key questions based on the MCI syllabus standards. In order to improve your score, get the NEET physics- Electromagnetic Induction essential questions PDF for yourself. Let us look at some of them.
Questions & answers
- In a non-uniform magnetic field, a metallic wire coil remains immobile. What is the coil’s induced emf?
Answer: Since the magnetic flux coupled to the secondary coil does not vary, no emf is induced in the coil.
- Whenever a metallic object is encircled by a coil conveying high frequency (H.F) alternating current, how does it get extremely hot?
Answer: When a metallic component is encircled by a coil carrying a high frequency (H.F) alternating current, eddy currents are formed, resulting in the joule’s heating effect.
- Maybe because a copper disc’s vibrations in a magnetic field minimally damped?
Answer: The creation of eddy currents opposes the oscillating motion of the copper disc, causing it to oscillate. As a result, the motion is dampened.
- Inside a non-uniform magnetic field, a metallic wire coil remains immobile. What is the magnitude of the induced emf in the coil?
Answer: Because the magnetic flux coupled to the secondary coil does not vary, no emf is induced in the coil.
- In the following cases, use Lenz’s law to identify the source of induced current:
An irregularly shaped wire that transforms into a circle form.
Answer: The direction of the magnetic field emf, as per Lenz’s law, tends to create a current that opposes the change in magnetic flux that caused it. Since the wire is extending to create a circle, the magnetism is exerting force outwards on each section of the wire. Furthermore, the direction of the induced flow will be such that it produces an upward magnetic field. As a result, the stress on the wire would be inward, causing induced power to pass in an anticlockwise direction in the loop. Deforming a circular loop into a thin straight wire. The flux penetrating the surface diminishes as a circular loop is deformed into a narrow straight wire. As a result, the induced current follows Lenz’s law and flows along.
- How can you tell the difference between resistance, reactance, as well as impedance in an a.c electrical circuit?
Answer: They can be classified as follows:
The resistor opposes the passage of electricity by providing resistance. It is unaffected by the source’s frequency.
Inductor and capacitor reactance is the resistance to current flow given by the inductance or capacitor. It is dependent on the outlet’s frequency.
Impedance: The opposition is provided by a resistance, inductance, or capacitance in combination. It is dependent on the source’s frequency.
- A metal rod PQ is placed between both the poles of a permanent magnet and rests on smooth rails AB. The magnetic field, the rails, and the rod are all perpendicular to each other. Throughout a switch K, a galvanometer G links the rails. Rod length is 15cm, B is 0.50T, and the resistivity of the closed loop holding the rod is 9.0m. Suppose that the playing field is equal. When K is open, does an extra charge build up at the rod ends? What happens if K isn’t open?
Answer: Indeed, while key K is closed, the continuous flow of current can keep the extra charge going. Excessive charge builds up at both rod ends when key K is open, however when key K is closed, excess charge is retained by the continual flow of current. Even if the electrons in the rod PQ feel magnetic force owing to the rod’s motion, there is no net force on them with K open as well as the rod moving evenly. The electric force created by the surplus charge of opposing nature at both rod ends cancels out the magnetic force. Whenever key K is open and the rod travels equally, there is no net force on the electrons in rod PQ. Due to the obvious excess charge of opposing nature at it from both extremities of the rods, the magnetic force is neutralised by the electric force setup.
Now, can you solve this question:
- rms value of voltage
- rms current
- power dissipated as heat.
5 Qualities of Good Languages Tutors
Mentors are the coaches who show their understudies using a system and web advancement and give a best instructive expense to handle the issue or question of the understudies. Online coaches vary as shown by the space, tutoring and master insight, so you should be invigorated by the changing strategies and capacities for educating on the web to transform into an unbelievable internet based aide. We should take a gander at specific attributes which can make you an amazing web-based guide. Read about Qualities of Good Languages Tutors below.
You may also like to learn Pashto.
Incredible Communication Skills and the Ability to Make Students Visualize:
An amazing aide is an individual who can pass on subject capacity in an unmistakable, sensible design to the understudies. Extraordinary correspondence joins everything – talk, clarity, use of appreciation, signals, etc
- Great correspondence joins
- Utilization of plentiful models
- Being a patient crowd
- Talking clearly and perceivably if keeping an eye on a greater bunch
Using ideal signals and looks while explaining being cautious concerning the right oration not using significant accents Likewise, a feasible coach is one who can help their understudies with imagining issues.
In spite of the way that we think we have most of the theme on the tips of our fingers, it may happen that a couple of thoughts move away from us. It’s not unforeseen, we can’t know everything, and we ought to have the alternative to see this. It is believe it or not alluring over tell the understudy that we don’t have even the remotest clue about the proper reaction rather than get it. In various conditions, where the characters don’t mix or when the gatherings are not conveying the best impact, make a step back and yield that we may not be the best person to help this understudy.
Identifying and resistance:
A stunning aide is smart and patient towards the understudies since they like the troubles and difficulties that an understudy may oppose when learning another language. The aide should comprehend that it requires time and opposition that empowers the understudies to recall the central language very well zeroing in on their requests and disarrays and offering them the best answer for their tendencies. Obstruction contributes a phenomenal game plan in drawing in the understudies to become familiar with any new vernacular in the most satisfying manner.
Each exceptional helper is exuberant concerning showing their understudies and giving the bona fide information to the understudies. The instructor ought to be committed and energetic concerning his work and draw in the understudies to become familiar with the subject in the most ideal manner conceivable. He ought to have the decision to work on everything and productive for the understudies to comprehend the contemplations in the most ideal manner conceivable. One of the uncommon properties in a reasonable associate is that they should be inviting with the understudies and lift their affirmation to rapidly progress toward the educator at whatever point an intriguing circumstance emerges concerning learning the new vernacular.
Another huge point to keep mind is their procedure. Pick an educator who recognizes how to finish distinctive appearance frameworks and who can say undoubtedly how to change their techniques as far as possible and characteristics of their understudies. Each understudy is novel and has another agreement, learning style, and musicality. It is dependent upon the educator to see those qualities and to put together their class appropriately. Pick an educator that is adaptable, flexible, and that favors reasonable frameworks.
An extraordinary quality instructor isn’t associated with showing the wanderer bits of the subject yet likewise about giving the understudies critical information, the reasonable methodology, and the issue’s framework. Also, being a patient, mindful and ardent assistant draws in them to learn and rehearse the information in the most ideal manner.
Muhammad Junaid is a senior Analyst and Search Engine Expert. Extensive experience being a lead writer in Languages Tutor. Work for years with local and international enterprises. Also, represent well-known brands in the UAE.
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List of Mistakes Every Defence Aspirant Should Avoid
It is an honour to be a part of the Indian defence forces and serve your motherland. However, joining the Indian defence forces is not an easy task. We are well acquainted with the fact that defence forces follow a stringent selection process to select adept personnel. You need to prepare for the exams with sheer dedication and commitment. Also, it is essential to eschew some mistakes that can keep you from cracking the defence exams. Do you want to know what kind of mistakes candidates generally make? Read this article to know some of the common mistakes every defence aspirant makes. Avoid making these mistakes and prepare for the exam perfectly.
Usually, youngsters of India hold prestigious positions in the defence forces by cracking the NDA, AFCAT, CDS exam. How are you planning to enter the defence forces? By cracking the NDA exam? If yes, then start preparing for the exam with the help of an institute that is proficient in providing NDA coaching in Chandigarh. While preparing for the exam, make sure you are not making mistakes that can cost you your success in the defence exam.
Here is a list of mistakes every defence aspirant should avoid while preparing for the exams:
Read the following points to know the types of mistakes made by candidates. We have also provided helpful ways to eradicate them.
- Not following a suitable study plan
Many candidates ask others about their preparation strategy and try to follow them. Following the strategies of others can never prove beneficial for you. So, try to make your own unique strategy and adhere to it. It can help you prepare for the exam in a systematic way. For sure, it can help you crack the exam with flying colours.
- Give up too early
After unsuccessful attempts, some candidates give up and shun the idea of joining the defence forces. Competition in the defence exams is very high and failing is a part of it. Also, remember failing once doesn’t mean you won’t be able to crack the exam next time. So, never lose hope while preparing for the exam. In case you fail in an exam, then use another strategy to prepare for the exam. But, never give up. Your consistent hard work can help you reap fruits of success.
- Easily fall in trap of distractions
You will get distracted by numerous things while preparing for the exam. Save yourself from falling into a trap of it. Generally, candidates feel distracted by social media. So, limit the use of social media while preparing for the exam. Moreover, try to avoid late night parties with your friends. Remember, you will have sufficient time for parties after cracking the exam.
Some youngsters aim to serve their nation by joining the Indian Air forces. Are you amongst them? If yes, then start preparing for the AFCAT exam. For proper guidance, you can link with a popular institute that provides excellent AFCAT coaching in Chandigarh.
- Last-minute preparation
Are you waiting for official notification to start your preparation? If yes, then you will not get enough time to prepare for the exam. We all have a rough idea when defence exams are conducted. So, try to start your exam preparation at least 3-4 months prior to the exam date. This way you will get enough time to prepare for the exam and revise various concepts as well. If you start your exam preparations late, you will not get adequate time to revise the concepts.
- Referring too many books and sources
Sometimes candidates collect a pile of books and all are not relevant for exam preparation. So, try to collect study material that is enough for completing the exam syllabus. You may find study material on various websites. But, never rely on that study material blindly. Ask your mentor before choosing any study material. Make sure your study material is as per actual exam syllabus and pattern. Also, avoid collecting heaps of books. Just focus on purchasing up to date books that can help you cover all the topics and theories of the exam.
- Not doing self-evaluation
Note that mere learning concepts and formulas will not help you to crack the exam. You need to practice a variety of questions to ace exam preparation. Solve some sample papers to assess yourself and make improvements wherever required. Moreover, solving sample papers can aid in improving your speed and accuracy for solving questions. Do you know where you will get these sample papers? Either download these papers from a website or purchase from a book store. Your exam preparation is incomplete, if you have not practiced enough questions.
- Avoiding self study
A majority of candidates join a coaching institute to prepare for defence exams. However, you can’t overlook self study after joining a coaching institute. You need to devote ideal hours for self study as well to retain the concepts you studied in the class. If you’ll avoid self study, there are high chances you won’t be able to crack the exam in the first attempt.
Are you preparing for the CDS exam? If yes, then enrol yourself in an esteemable institute that provides CDS coaching in Chandigarh. Also, give time to self study as well, if you want to ensure your success in the exam.
Securing a job in the defence forces is not a child’s play. Candidates need to put in sincere efforts while preparing for the exam by avoiding the mistakes mentioned above.
How Your Smartphone Can Help You Prepare for Government Exams?
Smartphones are our best friends that play a significant role in our daily lives. But, smartphones are considered as an enemy for candidates preparing for government exams. It is observed that smartphones falter the focus of candidates during study hours. Believe it or not, smartphones can become your assistant and primary source of information while preparing for the exam. You just need to replace all social media apps with exam preparatory apps. It’s quite hard to shun social media. We are not telling you to leave social media for a lifetime. Just delete these apps during your preparation period. You can re-install these apps after cracking the exam. Remember, you’ll have ample time after clearing the government exam to use social media.
Smartphones are of great use for candidates preparing for SBI PO & Clerk, IBPS PO & Clerk, SSC CGL exam. Do you want to know how it can help you? Read this article to know how to use a smartphone for your betterment. If you are preparing for a government exam, take help from your smartphone to study for different subjects of the exam.
Here are some creative ways in which your smartphone can play a role of tutor:
It is advisable to turn off the notification of social media apps. These notifications can distract you and break your concentration.
- Watch informative videos
Do you have a Youtube or Vimeo app on your smartphone? If yes, then use these apps for watching some informative videos. Subscribe useful channels on youtube that provide educational videos. Some educational channels upload video lectures of subjects like quants, reasoning, english and G.K. You can watch these videos at free of cost and prepare for the exam. Also, you will find many creative videos on youtube that can help you understand the concepts in a better way. On the other hand, Vimeo provides educational ad-free videos for candidates preparing for government exams.
- Audio playbacks
You can download various audio playbacks of various discussions on your smartphone. There are many podcasts that are informative and can help you prepare for the government exam. So, download an ideal app for listening to audio playbacks. Do you know the benefit of these audio playbacks? You can easily juggle with other activities while listening to these audios. Isn’t it awesome? This is how your smartphone can act as a boon for you.
- e-Books can help you
The best books in the world are just a click away from you. Yes, you read it right! You can easily download pdf of relevant books on your smartphone. There’s no need to own a hard copy of books. This way you can store relevant study material on your smartphone for exam preparation. Also, you will get an option to listen to these e-books. Some of the best websites to download free e-books are:
- Google eBookstore
- Amazon free kindle books
- Open library
- Free ebooks
- Exam preparation apps
In the starting of this article we talked about exam preparation apps. Now, let us discuss it in detail. There are umpteen apps in playstore that can help you prepare for the exam. These apps can provide you study material, test series and mock tests. Also, these apps provide daily quizzes for various government exams. Here is a list of apps that can help you prepare for the government exams:
- Pocket aptitude
- Daily current affairs and G.K.
- Bankers Adda
You can download any of the above apps to prepare for the government exam perfectly. Most of the above apps provide study material at free of cost for candidates.
- Apps for making notes
Note making is important while preparing for the exams. Your smartphone can help you to make notes for every subject. These notes can help you revise various concepts during the final hours of preparation. Here is a list of apps that can help you make proper notes:
- Zoho notebook
So, download any of the above apps to make notes of different subjects. For sure, it will make your notes easy. Also, you can easily store these notes on your smartphone.
- Assess yourself
You can easily appear for online mock tests with the help of your smartphone. With the help of your smartphone, you can replicate the experience of the actual exam. This way you can easily gather enough courage to appear for the actual exam. The best attribute of mock tests is that these are designed as per actual exam pattern and syllabus. Practicing mock tests can increase your chances of cracking the government exam in a single go. So, use your smartphone for your betterment and start solving mock tests with the help of your smartphone. Don’t forget to mute the notification of social media apps while solving mock tests.
- Download relevant study material
You can easily download study material on your phone from various websites. However, make sure the material you are downloading is authentic and sufficient to complete the exam syllabus. So, seek help from candidates who have already cleared the government exam.
- Easily attend online lectures
Some candidates join online classes to prepare for government exams. Many coaching institutes conduct online classes with the help of Zoomapp, Google meet and webinar. These apps are easily available on the app store and students can download it from there. This is how your smartphone can turn into a classroom. Note that your exam preparation can become perfect only when your smartphone is free from social media apps. Your smartphone is your worst enemy if it has social media apps.
Are you preparing for the SSC exam? If yes, then link with an ideal source that provides SSC coaching in Chandigarh.
These are some of the ways in which your smartphone can help you prepare for the government exams. This is how you can turn a distracting gadget into a useful source that can help you crack government exams. Moreover, there are countless ways through which you can use your smartphone for exam preparation; maybe that’s why this device is called smart. So, start studying for the exam smartly with the help of this device.
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