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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



Question ID - 151332 | SaraNextGen Top Answer

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

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

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

127 votes


127