A silver and a copper voltameter are connected in series with a `12.0 V` battery of negligible resistance. It is found that `0.806g` of silver is deposited in half an hour.Find (a) the mass of the copper deposited and (b) the energy supplied by the battery. `ECE` of silver `= 1.12 xx 10^(-6) kg C^(-1)` and that of copper `= 6.6 xx 10^(-7) kg C^(-1)`
A. 64 W
B. 32 W
C. 96 W
D. 16 W