A metallic conductor of length \( 1 \mathrm{~m} \) rotates in a vertical plane parallel to east-...

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A metallic conductor of length \( 1 \mathrm{~m} \) rotates in a vertical plane parallel to east-west direction about one of its end with angular velocity \( 5 \mathrm{rad} / \mathrm{s} \). If the horizontal component of earths magnetic field is \( 0.2 \times 10^{-4} \mathrm{~T} \), then emf induced between the two ends of the conductor is
(a) \( 5 \mu \mathrm{V} \)
(b) \( 50 \mu \mathrm{V} \)
(c) \( 5 \mathrm{mV} \)
(d) \( 50 \mathrm{mV} \)
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