A metallic resistor is connected across a battery. If the number of collisions of the free electrons with the lattice is some how decreased in the resistor (for example by cooling it), the current will

Question

A metallic resistor is connected across a battery. If the number of collisions of the free electrons with the lattice is some how decreased in the resistor (for example by cooling it), the current will (A) remains constant (B) increase (C) decrease (D) become zero

Tardigrade Admin · Accepted Answer

If number of collisions of the free electrons with the lattice is decreased, the time of relaxation of electrons will increases. Due to which drift velocity of electrons will increase and hence current will increase.

Q. A metallic resistor is connected across a battery. If the number of collisions of the free electrons with the lattice is some how decreased in the resistor (for example by cooling it), the current will

remains constant

increase

decrease

become zero

If number of collisions of the free electrons with the lattice is decreased, the time of relaxation of electrons will increases. Due to which drift velocity of electrons will increase and hence current will increase.