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JEE MAIN 2023
13-04-23 S1
Question
The source of time varying magnetic field may be (A) a permanent magnet (B) an electric field changing linearly with time (C) direct current (D) a decelerating charge particle (E) an antenna fed with a digital signal Choose the correct answer from the options given below:
Select the correct option:
A
(D) only
B
(C) and (E) only
C
(A) only
D
(B) and (D) only
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Source of time varying magnetic field may be → accelerated or retarded charge which produces varying electric and magnetic fields. → An electric field varying linearly with time will not produce variable magnetic field as current will be constant
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