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Two charge +q and - q are attached to th...

Two charge +q and - q are attached to the two ends of a light rod of length L, as shown in figure. The system is given a velocity v perpendicular to magnetic field `vecB` . The magnetic force on the system of charges and magnitude of force on one charge by the rod, are respcetively.

A

zero, zero

B

zero, qvB

C

2qvB, 0

D

2qvB, qvB

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The correct Answer is:
B
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