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The self-inductance of a coil is $L = 2 \text{ H}$. If the current in the coil changes at a rate of $\frac{dI}{dt} = 5 \text{ A/s}$, what is the induced electromotive force $\varepsilon$?
- A.$2.5 \text{ V}$
- B.$7 \text{ V}$
- C.$10 \text{ V}$
- D.$3 \text{ V}$
Show correct answer & step-by-step solution
Correct answer: C — $10 \text{ V}$
Solution
The induced electromotive force is . Substituting the values, .
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