Question

two wire A and b are equal length, defferent cross sectional area and made of same metal name the property which is same for both the wire


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Answer 1

chemical properties is the right answer pls mark it as a brainliest

Answer 2

Explanation:

Resistivity. 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).

(b) (i) For wire A, R1=ρlA1 and for wire B, R1=ρlA2 Thus, R2R1=A1A2

Since R1=4R2,R2R1=14 Thus, A1A2=14

(ii) As A1=πr21 and A2=πr22,A1A2=πr21πr22=(r1r2)2

As A1A2=14,(r1r2)2=14 or r1r2=12.