# A current passes through a resistor. Let K1 and K2 be the average kinetic energy of the conduction electrons and metal ions respectively. Then:

$\begin {array} {1 1} (A)\;K1 < K2 & \quad (B)\;K1 = K2 \\ (C)\;K1 > K2 & \quad (D)\;All\: three\: are\: possible \end {array}$

When a current passes through a resister velocity of conduction electrons is more than the velocity of metal ions. Therefore kinetic energy of conduction ions $K_1$ is greater than the kinetic energy of metal ions $K_2$
Ans : (C)
answered Feb 13, 2014
edited Feb 22