Physics-Faraday's Laws
NEET Physics Faraday's Laws Assertion Reason Question
Type: Assertion Reason-assertion-Easy-Class 12
Assertion (A): The induced electromotive force (emf) in a coil is directly proportional to the rate of change of magnetic flux through the coil. | Reason (R): Increasing the number of turns in the coil increases the total induced emf.
A
Both A and R are true, and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true, but R is false.
D
A is false, but R is true.
Correct Answer
Option A
Detailed Explanation
According to the NCERT context, the induced emf is given by the equation d–dBΦ/ dt, and for a coil with N turns, the total induced emf is Nd–dBΦ/ dt. Thus, increasing N increases the emf, explaining both A and R.
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