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Torque on a Dipole

A particle ha...

Question

A particle having a charge of $10 μ C$ and mass $1 μ g$ moves in a horizontal circle of radius $10 c m$ under the influence of a magnetic field of $0.1 T$ . When the particle is at a point $P$ , a uniform electric field is switched on so that the particle starts moving along the tangent with uniform velocity. The electric field is.

A

0.1 V / m

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B

1.0 V / m

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C

10.0 V / m

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D

100 V / m

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Solution

The correct option is A $0.1 V / m$

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