Question

# The magnetic field in a region is given by B=3r, where r is the distance from the origin. The direction of the magnetic field is along the negative z-axis. A conducting rod of length 20 cm lies as shown in the figure. If the rod is rotating with an angular velocity of 4 rad/s, find the emf induced between the ends of the rod.

A
1.6×102 V
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B
3.2×102 V
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C
6×102 V
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D
4×102 V
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