JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Application +4 | -1

If an electron revolves in the path of a circle of radius of

0.5 \times 10^{-10} {~m}

at a frequency of

5 \times 10^{15}

cycle/sec. The electric current in the circle is:
(Charge of an electron is

1.6 \times 10^{-19} {C}

)

View answer and explanation

Correct option: B

0.8 {~mA}

Option B (

0.8 {~mA}

) is correct because it is calculated using the formula I = ef, where e is the electron charge and f is the frequency.

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