Charged Particle in Time-Varying Magnetic Field – Rankers Physics
Topic: Electromagnetic Induction
Subtopic: Faraday's Law of Electromagnetic Induction

Charged Particle in Time-Varying Magnetic Field

Assertion (A): If a charged particle is released from rest in a time varying magnetic field, it moves in a circle.
Reason (R): In a time varying magnetic field, conservative electric field is induced.
 
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution:

Assertion (A) is false; a charged particle released from rest experiences no magnetic force (\(F_B = q(v \times B)\)). While an induced electric field exists, it does not necessarily cause circular motion. Reason (R) is false; a time-varying magnetic field induces a non-conservative electric field.

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