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 an angular frequency \omega. 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 [AIEEE 2004]

Correct Answer is : (Bπr2ω)28R

\frac{ (B \pi r^2 \omega) ^2}{8 R}

\frac{ (B \pi r \omega^2) ^2}{8 R}

AIEEE 2004 Physics Solved Paper

Section: Physics

Question : 60 of 78

Marks: +1, -0

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 an angular frequency ω. 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

[AIEEE 2004]

‌
(Bπrω)2
2R
‌
(Bπr2ω)2
8R
‌
Bπr2ω
2R
‌
(Bπrω2)2
8R

Validate

Go to Question:

Prev Question

Next Question