A horizontal wire \( 20 \mathrm{~m} \) long extending from east to west is falling with a veloci...

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A horizontal wire \( 20 \mathrm{~m} \) long extending from east to west is falling with a velocity of \( 10 \mathrm{~m} / \mathrm{s} \) normal to the Earths magnetic field of \( 0.5 * 10^{-4} T \). What is the value of induced emf in the wire?
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