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Which of the following quantities do not...

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

A

Drift speed

B

Resistivity

C

Resistance

D

Number of free electrons

Text Solution

Verified by Experts

In metallic conductors, the number of free electrons remains nearly constant with temperature. By contrast, in semiconductors, the number of free electrons rises appreciably with rise in temperature, leading to a decrease in resistivity.
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