Which of the following quantities does not change when a resistor connected to a battery is heated by the current?

Step-by-step solution

When a resistor is heated by the current, its temperature increases. The number of free electrons in a metallic resistor depends on the nature of the material and remains practically constant with changes in temperature. The relaxation time decreases with an increase in temperature due to more frequent collisions of electrons with the vibrating lattice ions. Resistivity = m n e^2 increases because decreases. Resistance R = L A increases as resistivity increases. Drift speed v_d = e V mL decreases because the relaxa