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In an atom, an electron moves in an orbi...

In an atom, an electron moves in an orbit of radius `r` with a speed `v`, the equivalent current is.

A

`(e v)/(2 pi r)`

B

`(ev)/(2 r)`

C

`(e v)/(2 pi)`

D

`( e)/(2 pi r)`

Text Solution

Verified by Experts

The correct Answer is:
A

`i = (q)/(T) = (e)/(2 pi r//v) = (ev)/(2 pi r), clockwise`.
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Knowledge Check

  • An electron moves in circular orbit of radius r with constant speed v.The force acting in it is

    A
    `(mv^2)/r`
    B
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    `(m^2v^2)/r`
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    A
    Its total energy increases but its kinetic energy decreases
    B
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