Question: A copper voltameter is connected in series with a heater coil of resistance $0.1\Omega$. A steady ...

Question

A copper voltameter is connected in series with a heater coil of resistance $0.1\Omega$ . A steady current flows in the circuit for twenty minutes and mass of 0.99 g of copper is deposited at the cathode. If electrochemical equivalent of copper is 0.00033 gm/C, then heat generated in the coil is

Answer 1

Solution

m = Z i t ⇒ $i = \frac{m}{Zt} = \frac{0.99}{0.00033 \times 1200} = 2.5A$

Hence heat generated in the coil is

$H = i^{2}Rt = (2.5)^{2} \times 0.1 \times 1200$ = 750 J

Question: A copper voltameter is connected in series with a heater coil of resistance \(0.1\Omega\). A steady ...

Solution