alleryA 100-turn coil of area 200 cm² is rotated at 50 rev/s in a field of 0.05 T. Peak EMF:
A100 V
B31.4 V
C6.28 V
D314 V
Answer & Solution
Correct answer: B. 31.4 V
We have ε₀ = N B A ω.
That is ε₀ = 100 × 0.05 × 200 × 10⁻⁴ × (2π × 50).
So ε₀ = 100 × 0.05 × 0.02 × 100π ≈ 31.4 V.
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