Question

Assertion (A): It is difficult to move a magnet into a coil of large number of turns when the circuit of the coil is closed.
Reason (R): The direction of induced current in a coil with its circuit closed, due to motion of a magnet, is such that it opposes the cause.

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

Hint:

Lenz's Law states that the direction of the induced current is always such that it opposes the change causing it.

Answer 1

The Correct Option is A

According to Lenz's Law, the induced current in the coil opposes the motion of the magnet. Therefore, the difficulty in moving the magnet into the coil is explained by the opposing force due to the induced current. Hence, both the Assertion and the Reason are true, and the Reason correctly explains the Assertion.