A metallic rod of 1 m length is rotated with a frequency of 50 revolution per second…
Physics · Class 12 · CBSE — Electromagnetic Induction
A metallic rod of 1 m length is rotated with a frequency of 50 revolution per second, with one end hinged at the centre and the other end at the circumference of a circular metallic ring of radius 1 m about an axis passing through the centre and perpendicular to the plane of the ring. A constant uniform magnetic field of 1 T parallel to the axis is present everywhere. The emf between the centre and the metallic ring is
- 157 V
- 117 V
- 127 V
- 137 V
Answer
(A) 157 V
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