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An electron having charge 1.6xx10^(-19)C...

An electron having charge `1.6xx10^(-19)C` and mass `9xx10^(-31)` kg is moving with `4xx10^(6)ms^(-1)` speed in a magnetic field `2xx10^(-1)` tesla in circular orbit. The force acting on electron and the radius of the circular orbit will be

A

`12.8xx10^(-13)N,1.1xx10^(-4)m`

B

`1.28xx10^(-14)N,1.1xx10^(-3)m`

C

`1.28xx10^(-13)N,1.1xx10^(-3)m`

D

`1.28xx10^(-13)N,1.1xx10^(-4)m`

Text Solution

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The correct Answer is:
D
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