The resistance of a metal increases with the increase of temperature due to :

Number of electrons

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Velocity of electrons

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Scattering of electrons with core ions

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Thermal motion of core ions

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Solution

The correct option is D Thermal motion of core ions
When the temperature is increased, the core ions show thermal motion and increased vibration which hinders the motion of charge carriers under the influence of electric filed. Thus the resistance of material is increased.

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due to increase in temperature the resistance of a conductor increases due to increased number of conduction electrons but if there will be more charges there will be more current and current is inversely proportional to resistance then how it increases the resistance of the conductor?

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The resistance of a metal increases with the increase of temperature due to :

The correct option is D Thermal motion of core ionsWhen the temperature is increased, the core ions show thermal motion and increased vibration which hinders the motion of charge carriers under the influence of electric filed. Thus the resistance of material is increased.

The correct option is D Thermal motion of core ions
When the temperature is increased, the core ions show thermal motion and increased vibration which hinders the motion of charge carriers under the influence of electric filed. Thus the resistance of material is increased.