Question

A metallic resistor is connected across a battery. If the
number of collisions of the free electrons with the lattice is
somehow decreased in the resistor (for example, by cooling
it), then the current will
(a) increase
(b) decrease
(C) remain constant
(d) become zero​

Answer 1

Answer:

a

You Know

By decrease Temperature - Resistance decrease

I = V/R

R decrease

Current - Increase in Conductor

if in Question Semiconductor like Si, Ge mentioned than

Temperature decrease Resistance increase

Current Decrease