A conductor is moving with a speed of $10 \text{ m/s}$ in the direction perpendicular to the direction of magnetic field of induction $0.8 \text{ T}$. If it induces an E.M.F. of $8 \text{ V}$ between the ends of the conductor, the length of the conductor is \dots
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Motional E.M.F. becomes maximum when the conductor moves perpendicular to the magnetic field.