A conducting rod of length \( 1 \mathrm{~m} \) rotates with a uniform angular velocity \( 10 \ma...

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A conducting rod of length \( 1 \mathrm{~m} \) rotates with a uniform angular velocity \( 10 \mathrm{rad} / \mathrm{s} \) about its perpendicular bisector. A uniform magnetic field of \( 2 \mathrm{~T} \) exists parallel to the axis of rotation. The potential difference between the two ends of the rod is
(a) \( 40 \mathrm{~V} \)
(b) \( 10 \mathrm{~V} \)
(c) \( 20 \mathrm{~V} \)
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