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## Homework Statement

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Determine the resistance of a conductor and the volt

drop per ampere metre at 70°C for a 95 mm2 pvc/swa/pvc copper cable.

The temperature coefficient of resistance is 0.004 per °C.

## Homework Equations

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R70 ( resistance at 70 degrees ) = R20 [ 1+( temperature coefficient of resistance of copper X's temperature difference ) ]

## The Attempt at a Solution

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Hi there folks!

I have the above question as part of work I'm doing on a course that I'm studying.

I've found what the resistance/meter is by using the following equation:

R70 ( resistance at 70 degrees ) = R20 [ 1+( temperature coefficient of resistance of copper X temperature difference ) ]

I was provided with a table which showed the resistance/meter for cables at 20 degrees.

My notes have in all examples given the volt drop per ampere per meter so I'm not 100% sure on how to obtain it myself. I'm thinking that this resistance is the same value as volt drop per ampere per meter as using ohms law V = I x's R and therefore 1 amp multiplied by R70 from above equation should give a volt drop per ampere per meter.

Is my thinking correct?

Any thoughts would be much appreciated!

Neil