3
Question
The resistivity of a substance depends upon
The resistivity of a substance depends upon
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Solution
The correct option is D temperature
Answer is D.
Electrical resistivity is an intrinsic property that quantifies how strongly a given material opposes the flow of electric current. A low resistivity indicates a material that readily allows the movement of electric charge. It is defined as the resistance per unit length of the resisting material.
At high temperatures, the resistance of a metal increases linearly with temperature. As the temperature of a metal is reduced, the temperature dependence of resistivity follows a power law function of temperature.
Hence, resistivity is dependent on the temperature.
Answer is D.
Electrical resistivity is an intrinsic property that quantifies how strongly a given material opposes the flow of electric current. A low resistivity indicates a material that readily allows the movement of electric charge. It is defined as the resistance per unit length of the resisting material.
At high temperatures, the resistance of a metal increases linearly with temperature. As the temperature of a metal is reduced, the temperature dependence of resistivity follows a power law function of temperature.
Hence, resistivity is dependent on the temperature.
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