In an electroplating experiment `m` g of silver is deposited, whe `4` amperes of current flows for `2` mimtes. The amout (in g) of silver deposited by `6` amperes of current flowing for ` 40` seconds will be .

Options

A. 4 m
B. m/2
C. m/4
D. 2m

Answer

B

Explanation

`m = Z xx 4 xx 120 , m' = Z xx 6 xx 40`
`therefore (m')/(m) = (6 xx 40)/( 4 xx 120) = (1)/(2)`
or m' = m/2 .