Question

Assertion (A): Induced emf produced in a coil will be more when the magnetic flux linked with the coil is more. 

Reason (R): Induced emf produced is directly proportional to the magnetic flux.

Options

• Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).

• Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).

• Assertion (A) is true, but Reason (R) is false.

• Both Assertion (A) and Reason (R) are false.

Answer 1

Both Assertion (A) and Reason (R) are false.

Explanation:

The induced emf produced in a coil does not depend on the total amount of magnetic flux linked with it. According to Faraday’s Law of Electromagnetic Induction, the induced emf is directly proportional to the rate of change of magnetic flux over time `(e prop (d Phi)/dt)`, not the flux itself. This means that even if the magnetic flux is very high, the induced emf will be zero if the flux is not changing. Therefore, the assertion that more flux means more emf is incorrect, and the reason stating they are directly proportional is also incorrect.