Question

A copper wire is stretched so that its length increases and its diameter decreases. what is the result?

Answer 1

The result is although the wire's resistivity doesn't change, its resistance does.

Considering the formula for a material's resistance:

​R=pL/A

R is directly proportional to L and inversely proportional to A, as can be seen. Be aware that "rho" is a material-specific and intensive attribute (meaning this value will not change if the material is only physically altered). Remember that A = This implies that the relationship between R and the square of r is inverse. When the wire is stretched, the impacts on length are less noticeable than the effects on r. Therefore the wire's resistance increases, but its resistivity stays the same.

Learn more about resistance here:

brainly.com/question/20708652

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