MCQ
When a wire loop is rotated in a magnetic field, the direction of induced e.m.f. changes once in each
- A$\frac{1}{4}$ revolution
- ✓$\frac{1}{2}$ revolution
- C$1$ revolution
- D$2$ revolution
✓
Answer
Correct option: B.
$\frac{1}{2}$ revolution
$\frac{1}{2}$ revolution
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