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Q)

A horizontal straight wire $10 \;cm$ long expending from east to west is falling with a speed of $5.0\; m/s $ at right angles to the horizontal component of the earth's magnetic field $0.30 \times 10^{-4}\;wb/m^2$. What is the direction of the induced $emf$.


(a) from east to west
(b) from south to north
(c) from west to east
(d) from north to south

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