Which common factor affects both resistance as well as resistivity and how?
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nature of material.......length - longer wires have greater resistance.thickness - smaller diameter wires have greater resistance.temperature - heating a wire increases its resistance.
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1.Length - the further electrons have to travel through material, the more collisions they will have so the higher the value of resistance.
2 ) Area - a bigger area means that in any 1 second more electrons will be able to travel through a piece of wire. More electrons means more current which means less resistance.
3) Material - if you swapped all the copper wire in a circuit for wood you'd notice a lot less current and a lot more resistance in the circuit.
4) Temperature - but we've covered that in 'current-voltage graphs'.
2 ) Area - a bigger area means that in any 1 second more electrons will be able to travel through a piece of wire. More electrons means more current which means less resistance.
3) Material - if you swapped all the copper wire in a circuit for wood you'd notice a lot less current and a lot more resistance in the circuit.
4) Temperature - but we've covered that in 'current-voltage graphs'.
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