How does resistance of alloy vary with temperature?
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well ,saying that resistance of alloy vary with Temperature is not that much accurate
In real , R = (rho) l/A where rho is a constant which depends on the property of metal taken.
it is the rho who vary with the temperature
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The resistance of a metal conductor is due to collisions between the free electrons of the electric current and the metal ions of the wire. If the temperature of a metal conductor increases, the ions of the metal vibrate more vigorously. Hence, for a metal, resistance increases with increasing temperature.
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