Physics · Electromagnetic Induction
The current through an inductor coil is varied uniformly from 20 A to 10 A in 1 s. If the induced electromotive force (emf) measured by a voltmeter is 40 V, what is the self-inductance of the coil?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12 H
- 21 H
- 34 H✓
- 48 H
Correct answer
4 H
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