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Dependence of Resistance on Temperature

A metallic re...

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), the current will

A

increase

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B

decrease

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C

remains constant

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D

become zero

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Solution

The correct option is B increase
When the number of collisions of free electrons with the lattice is decreased in the resistor, then it means that less hindrance occurs in the flow of electrons, consequently the resistance is low.Hence the correct option is A

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