If coil A of resistance 15 Ω  and coil B of resistance 5 Ω are subjected to time varying magnetic field, then the current induced in these coils are:

This question was previously asked in
RRB Group D 19 Sept 2022 Shift 3 Official Paper
View all RRB Group D Papers >
  1. in the ratio 1 ∶ 2
  2. in the ratio 1 ∶ 1
  3. same
  4. different

Answer (Detailed Solution Below)

Option 4 : different
Free
RRB Group D Full Test 1
3 Lakh Users
100 Questions 100 Marks 90 Mins

Detailed Solution

Download Solution PDF

The correct answer is different

Key Points

  •  A time-varying magnetic field produces an electric field
  • This is according to Faraday's first law of electromagnetic induction which states that whenever a magnetic flux associated with a conductor changes, it produces an electromotive force.
  • Thus, this electromotive force is different for the different coils as the resistances of them are different
  • Since resistance and EMF is different we have the current induced in these coils are also different
Latest RRB Group D Updates

Last updated on Jun 2, 2025

-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.

-> The RRB Group D Exam Date will be soon announce on the official website. Candidates can check it through here about the exam schedule, admit card, shift timings, exam patten and many more.

-> A total of 1,08,22,423 applications have been received for the RRB Group D Exam 2025. 

-> The RRB Group D Recruitment 2025 Notification was released for 32438 vacancies of various level 1 posts like Assistant Pointsman, Track Maintainer (Grade-IV), Assistant, S&T, etc.

-> The minimum educational qualification for RRB Group D Recruitment (Level-1 posts) has been updated to have at least a 10th pass, ITI, or an equivalent qualification, or a National Apprenticeship Certificate (NAC) granted by the NCVT.

-> This is an excellent opportunity for 10th-pass candidates with ITI qualifications as they are eligible for these posts.

-> The selection of the candidates is based on the CBT, Physical Test, and Document Verification.

-> Prepare for the exam with RRB Group D Previous Year Papers.

Get Free Access Now
Hot Links: teen patti app teen patti master gold dhani teen patti