STANDARDPhysics-Electromagnetic Induction
STANDARD Physics Induced EMF MCQ Question
Type: MCQ-conceptual-Medium-Class 12
The current i in a coil varies with time as shown in the figure. The variation of induced emf with time would be
A
Option 1
B
Option 2
C
Option 3
D
Option 4
Correct Answer
Option C
Detailed Explanation
The induced emf is given by e = -L (di/dt). From 0 to T/4, di/dt is constant and negative, so the emf is negative. From T/4 to T/2, di/dt is zero, so the emf is zero. From T/2 to 3T/4, di/dt is constant and positive, so the emf is positive.
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