An e.m.f. of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be______________?
Correct answer: D. 4 A/s
- A. 64 A/s
- B. 32 A/s
- C. 16 A/s
- D. 4 A/s
Explanation
Using e = L(di/dt), the rate of change of current is di/dt = e/L = 16/4 = 4 A/s. The induced voltage depends on the rate of change of current, not on the current itself.
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