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An electorn moves in a circle of radius ...

An electorn moves in a circle of radius 10cm with a constant speed of `4.0xx10^(6)ms^(-1)`.Find the electric current at a point on the circle.

A

`2xx10^(-12)A`

B

`1.019xx10^(-12)A`

C

`1xx10^(-13)A`

D

`1xx10^(-14)A`

Text Solution

Verified by Experts

The correct Answer is:
B
`I=(ev)/(2pi r)=(1.6xx10^(-19)xx4xx10^(6))/(6.28xx10^(-1))`
`=1.019xx10^(-12)A`
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