A planar loop is rotated in a magnetic field about an axis perpendicular to the field…
Physics · Class 12 · CBSE — Alternating Current
A planar loop is rotated in a magnetic field about an axis perpendicular to the field. The polarity of induced emf changes once in each:
- 1 revolution
- \((\frac{1}{2})\) revolution
- \((\frac{1}{4})\) revolution
- \((\frac{3}{4})\) revolution
Answer
(B) ( 1 2 ) revolution
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