Physics-Faraday's Laws
NEET Physics Faraday's Laws MCQ Question
Type: MCQ-numerical-Easy-Class 12
A coil of 50 turns is placed in a uniform magnetic field which decreases from 0.6 T to 0.2 T in 0.1 seconds. If the area of the coil is 0.02 m², what is the magnitude of the induced emf in the coil?
A
0 V
B
0.4 V
C
0.08 V
D
8.0 V
Correct Answer
Option D
Detailed Explanation
Using Faraday’s law: induced emf (ε) = -N (ΔΦ/Δt). Here, ΔΦ = A (ΔB) = 0.02 (0.6 - 0.2) = 0.008 Wb, so ε = -50 (0.008/0.1) = 8.0 V.
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