In a uniform magnetic field of induction B a wire in the form of a semicircle of radius r rotates about the diameter of the circle with angular frequency . The axis of rotation is perpendicular to the field. If the total resistance of the circuit is R the mean power generated per period of rotation is
As we learnt in
Motional E.m.f due to rotational motion -
Semicircle conducting loop
At any instant magnetic flux associated with the coil is
induced current =
Instantaneous power = I2R
Average power
Option 1)
This option is incorrect
Option 2)
This option is correct
Option 3)
This option is incorrect
Option 4)
This option is incorrect
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