Question

The current in a coil varies with time as shown in the figure. The variation of induced emf with time would be

• A. \( \frac{T}{4} \)
• B. \( T/2 \)
• C. \( 3T/4 \)
• D. \( T \)

Hint:

The induced emf in a coil is proportional to the rate of change of current through it.

Answer 1

The Correct Option is D

The induced emf is related to the rate of change of current in the coil. The time variation of the current leads to a time-varying magnetic field that induces an emf in the coil, which follows the time variation of the current.

Step 2: Conclusion.
The induced emf varies with time in the same manner as the current, corresponding to option (d).