MCQ
The average emf induced in a coil when a current changes from 0 to 2 A in 0.05 sec is 8 V . The selfinductance of the coil is
- A0.1 Η
- ✓0.2 H
- C0.4 H
- D0.8 H
✓
Answer
Correct option: B.
0.2 H
(B) 0.2 H
$e = M \frac{ di }{ dt }$
$8= L \frac{(2-0)}{0.05}$
$L=0.2 H$
$e = M \frac{ di }{ dt }$
$8= L \frac{(2-0)}{0.05}$
$L=0.2 H$
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