The current flowing in a copper voltmeter is `1.6A`. The number of `Cu^(++)` ions deposite at the cathode per minute are

Options

A. `1.5xx10^(20)`
B. `3xx10^(20)`
C. `6xx10^(20)`
D. `1xx10^(19)`

Answer

B

Explanation

`Q = it = 1.6xx60 = 96 C`
`n`: number of `Cu^(2+)` ions
`n(2e)=Qimplies n=(Q)/(2e) = (96)/(2xx1.6xx10^(-19))`
`=3xx10^(20)`.