MCQ
The current through choke coil increases form zero to $6 A$ in $0.3$ seconds and an induced e.m.f. of $30 \mathrm{~V}$ is produced. The inductance of the coil of choke is
- A$5 \mathrm{H}$
- B$2.5 \mathrm{H}$
- ✓$1.5 \mathrm{H}$
- D$2 \mathrm{H}$
✓
Answer
Correct option: C.
$1.5 \mathrm{H}$
(c) $|e|=L \frac{d i}{d t} \Rightarrow 30=L \times \frac{(6-0)}{0.3} \Rightarrow L=1.5 \mathrm{H}$
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