Question

Two wires A and B of circular cross-section are made of the same metal and have equal lengths, but the
resistance of wire A is four times greater than that of wire B. Find the ratio of their cross-sectional areas.​

Answer 1

Answer:

This is due to the reason that the resistivity is the property of the material of which the wire is made. As both the wires are made of the same metal, their resistivity is the same. (ii) Resistance. As both the wires are of different cross-sectional area, their resistances are different (r∝1/A).

Explanation:

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Answer 2

Answer:

so simply ,u get ur answer as A/B = 1/4

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