In the figure below, a stiff wire bent into a semicircle of radius a is rotated

Question

In the figure below, a stiff wire bent into a semicircle of radius a is rotated at constant frequency f in a uniform magnetic field B. (Use any variable or symbol stated above as necessary. All quantities are in SI units.)

(a) What is the frequency of the emf induced in the loop?
frequency =

(b) What is its amplitude?
amplitude =

In the figure below, a stiff wire bent into a semicircle of radius a is rotated at constant frequency f in a uniform magnetic field B. (Use any variable or symbol stated above as necessary. All quantities are in SI units.) (a) What is the frequency of the emf induced in the loop? frequency = (b) What is its amplitude? amplitude =

Explanation / Answer

The amplitude of what? Current , voltage, flux ? Take voltage V = dø / dt = B . p r^2 / T/2 = 2p . f . b . a^2 = V max

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