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  4. ECE of copper is 3.3 × 10-7 kg / C. If 100 kWh energy is consumed at 33 V in a copper voltameter, then mass of copper liberated is

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Q. ECE of copper is $3.3 \times 10^{-7} \,kg / C$. If $100\, kWh$ energy is consumed at $33\, V$ in a copper voltameter, then mass of copper liberated is

BHUBHU 2008Electromagnetic Induction

Solution:

Mass of copper liberated
$m=z i t $
$=z\left(\frac{P}{V}\right) t $
$=\left(3.3 \times 10^{-7}\right)\left(\frac{100 \times 36 \times 10^{5}}{33}\right) $
$=3.6 \,kg$