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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

`(ev)/(2pi r)`

B

`(2pi ev)/r`

C

3 ev

D

evr

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The correct Answer is:
A
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TARGET PUBLICATION-ATOMS, MOLECULES AND NUCLEI -Competitive Thinking
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