Question

Two copper wires P and Q of length 50m and 10m and radii 2cm and 1cm respectively. Compare their resistances. Which will have more resistance?




Explain briefly​

Answer 1

R=pl/A

R=p50/pie r²

R1=p x 50/3.14 x (0.02)²=39809 x p

R2=p x 10/3.14 x (0.01)²=31847 x p

Resistivity is same in both as both are copper wires

R1 has more resistance.

Answer 2

this is your answer

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