How do you work out the cross sectional area of a wire?
1 answer:
For the xsectional area it's pi r squared. The other formula is for the volume of a cylinder. Which is what the wire is, a long cylinder. I can't remember the resistivity formula to hand,
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pi x r^2 is the formula for the cross sectional area of the wire.the other formula is for the volume of a cylinder. Though I can't remember the formula for resistivity off my noggin, the wire is, effectively, a long cylinder isn't it ???
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pi x r^2 is the formula for the cross sectional area of the wire.the other formula is for the volume of a cylinder. Though I can't remember the formula for resistivity off my noggin, the wire is, effectively, a long cylinder isn't it ???
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