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62.5 x 10∧ 8 ...

Question

62.5 x 10^8 electrons per second are flowing through a wire of area of cross section 0.1 m², the value of current flowing will be

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Solution

No: of electrons flowing per sec = 62.5 ×10^8

Thus,
Charge flowing per sec=n×e

(e=charge of an electron)

Charge flowing per sec=(62.5×10^8) × (1.6×10^-19)

= 10^-9C/s

Current, I = Q/t
= 10^-9 A

Current Intensity, J=I/A

J=0.1^-9/0.1
=10^-8

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