MCQ
An e.m.f. of $5$ volt is produced by a self inductance, when the current changes at a steady rate from $3\ A$ to $2\ A$ in $1$ millisecond. The value of self inductance is
- A$0$
- B$5 \mathrm{H}$
- C$5000 \mathrm{H}$
- ✓$5 \mathrm{mH}$
✓
Answer
Correct option: D.
$5 \mathrm{mH}$
$L=\frac{e}{d i / d t}=\frac{5}{(3-2) / 10^{-3}}=\frac{5}{1} \times 10^{-3}=5$ millihenry
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