Magnetic flux through a coil changes from 5 mWb to 1 mWb in 0.1 s. Induced EMF:
A4 V
B20 mV
C0.4 V
D40 mV
Answer & Solution
Correct answer: D. 40 mV
EMF = |ΔΦ/Δt| = |1 - 5| × 10⁻³ Wb / 0.1 s = 4 × 10⁻² V = 0.04 V = 40 mV.
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