The figure shows a semi-circular conducting ring of radius a, which is rotated with constant angular velocity ω about an axis passing through O and parallel to field B as shown. Identify the correct value of potential difference

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VP−VQ=12Bωa2

VQ−VO=2Bωa2

VP−VO=14Bωa2

The maximum value of VP−VO=πa2ωB2

answer is B.

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Detailed Solution

VQ−VO=12B(ω)r2=Bω2(2a)2=2Bωa2

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