Energy conservation - class-XII

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Multiple Choice

A circular coil of radius 6 cm and 20 turns rotates about its vertical diameter with an angular speed of 40 rad $s^{-1}$ in a uniform horizontal magnetic field of magnitude $2 \times 10^{-2}$ T. If the coil form a closed loop of resistance 8 $\Omega$, then the average power loss

  1. $2.07\times 10^{-3}$W
  2. $1.23\times 10^{-3}$W
  3. $3.14\times 10^{-3}$W
  4. $1.80\times 10^{-3}$W
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