What is meant by "electrical resistance" of a | vedclass

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(N/A) Electrical resistance is the property of a conductor to oppose the flow of electric current through it.$(i)$ When a low current passes through a

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(N/A) Electrical resistance is the property of a conductor to oppose the flow of electric current through it.$(i)$ When a low current passes through a conductor for a short duration, the heat generated $(H = I^2Rt)$ is negligible. Therefore, there is no significant rise in temperature, and the resistance remains effectively unchanged.$(ii)$ When a heavy current passes through a conductor for about $30$ seconds, a significant amount of heat is produced. This leads to a considerable rise in the temperature of the conductor. Since the resistance of most metallic conductors increases with an increase in temperature, the resistance of the conductor will increase.

What is meant by "electrical resistance" of a conductor? State how the resistance of a conductor is affected when $(i)$ a low current passes through it for a short duration; $(ii)$ a heavy current passes through it for about $30$ seconds.

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