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Two point masses, m each carrying charge...

Two point masses, m each carrying charges `-q` and `+q` are attached to the ends of a massless rigid non - conducting wire of length L. When this arrangement is placed in a uniform electric field, then it deflects through an angle `theta`. The minimum time needed by the rod to align itself along the field is

A

`2pisqrt((mL)/(qE))`

B

`(pi)/(2)sqrt((mL)/(2qE))`

C

`pisqrt((2mL)/(qE))`

D

`2pi sqrt((3mL)/(qE))`

Text Solution

Verified by Experts

The correct Answer is:
B
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