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A current of 1 mA is flowing through a ...

A current of 1 mA is flowing through a copper wire. How many electrons will pass a given point in one second `[e = 1.6 xx 10^(19)`Coulomb]

A

`6.25 xx 10^(8)`

B

`6.25 xx 10^(31)`

C

`6.25 xx 10^(15)`

D

`6.25 xx 10^(19)`

Text Solution

Verified by Experts

The correct Answer is:
C
Current, `I = (" Charge")/( " Time")`
as charge `q=n xx 1.6 x 10^(-19)`
`10^(-3)` amp `= ( n xx 1.6 xx 10^(-19) )/( 1 " sec")`
`n = 6.25 xx 10^(15)`
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