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Question

A conducting rod AB of length =1 m is moving at a velocity v=4 m/s making an angle 30o with its length. A uniform magnetic field B=2T existing in a direction perpendicular to the plane of motion. Then -
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A
VAVB=8 V
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B
VAVB=4 V
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C
VBVA=8 V
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D
VBVA=4 V
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Solution

The correct option is D VBVA=4 V

Given,

Length L=1m

velocity, v=4 m/s

Angle, θ=30o

Magnetic Field, B=2T

Potential Difference,

V=BLvsin30o=2×1×4×sin30o=4 V

Potential difference is 4V


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