Question

How does the resistivity of a wire change, when the length is doubled and the area of cross section is halved? Justify. How will be the graph between length and resistivity of a conductor

Answer 1

Step-by-step explanation:

so if length is doubled resistance will also get doubled i.e resistance is 4 times that of original resistance. now, the resistance of a conductor is inversely proportional the area of cross section. The larger the cross sectional area, the lower the resistance since the electrons have a larger area to flow through.

Answer 2

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