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Question
Which of the following quantities do not change when a resistor connected to a battery is heated due to the current?
Which of the following quantities do not change when a resistor connected to a battery is heated due to the current?
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Solution
The correct option is C Number of free electrons
Resistance, resistivity and drift velocity varies with relaxation time which is dependent on temperature.
Number of free electrons in a conductor remains invariant even if its temperature changes.Hence correct option is option D.
Resistance, resistivity and drift velocity varies with relaxation time which is dependent on temperature.
Number of free electrons in a conductor remains invariant even if its temperature changes.Hence correct option is option D.
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