A wheel with 20 metallic spokes each 1 m long is rotated with a speed of 120 rpm in a…

Physics · NEET · NTA ExamsMagnetic Effects of Current and Magnetism

A wheel with 20 metallic spokes each 1 m long is rotated with a speed of 120 rpm in a plane perpendicular to a magnetic field of 0.4 G. The induced emf between the axle and rim of the wheel will be, (1 G = 10-4 T)
  1. \(2.51 \times 10^{-4} \mathrm{~V}\)
  2. \(2.51 \times 10^{-5} \mathrm{~V}\)
  3. \(4.0 \times 10^{-5} \mathrm{~V}\)
  4. 2.51 V

Answer

(B) 2.51 10^ -5 ~V

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