An AC generator consists of a coil of 100 turns and is of cross-sectional area 3   m 2 . It is rotating…

An AC generator consists of a coil of 100 turns and is of cross-sectional area 3 m2. It is rotating at a constant angular speed of 60 rad s-1 in a uniform magnetic field of 0.04 T. Resistance of the coil is 360 Ω. What is the maximum power dissipation in the coil?
  1. 720 W
  2. 518 W
  3. 360 W
  4. 100 W

Solution

Max emf, ε0=NBAω=100×0.04×3×60=720 V

Power dissipated, P=ε022R=72022×360=720 W

Asked in: AP EAMCET 2021 (20 Aug Shift 2)

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