1.

A simple pendulum with bob of mass m and conducting wire of length L swings under gravity through an angle \[2\theta \]. The earth?s magnetic field component in the direction perpendicular to swing is B. Maximum potential difference induced across the pendulum is                           [MP PET 2005]

A.            \[2BL\sin \left( \frac{\theta }{2} \right){{(gL)}^{1/2}}\]       
B.            \[BL\sin \left( \frac{\theta }{2} \right)(gL)\]
C.            \[BL\sin \left( \frac{\theta }{2} \right){{(gL)}^{3/2}}\]          
D.            \[BL\sin \left( \frac{\theta }{2} \right){{(gL)}^{2}}\]
Answer» B.            \[BL\sin \left( \frac{\theta }{2} \right)(gL)\]


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