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]

Options

A. `6.25 xx 10^(19)`
B. `6.25 xx 10^(15)`
C. `6.25 xx 10^(31)`
D. `6.25 xx 10^(8)`

Answer

B

Explanation

For `I^(st)` second
`q = I xx t = 1mC`
No. Of electron `=q/e = (1 xx 10^(-3))/(1.6 xx 10^(-19)) = 6.25 xx 10^(15)`