RE-NEET2026Physics-Electromagnetic Induction
RE-NEET 2026 Physics Induced EMF and Current MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A conducting loop of finite resistance lies on the x-y plane. There is a constant magnetic field in the z direction. The area of the loop varies with time t, as A = A₀(¹⁺ sin t) in appropriate units. The figure that correctly indicates the qualitative behaviour of the power P dissipated in the loop as a function of time is:
Correct Answer
Option D
Detailed Explanation
The power dissipated in the loop is proportional to the square of the induced EMF, which is proportional to the rate of change of magnetic flux. Since the area varies sinusoidally, the power will have a sinusoidal squared pattern, matching option (4).
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