Two conducting wires of same material and of equal lengths , resistance and resistivity having ratio 1:2 . There diameter ratio will be a)1:2 b)1:4 c) 4:1 d) 1:√2

Two conducting wires of same material and of equal lengths , resistanc

1.	Two conducting wires of same material and of equal lengths , resistance and resistivity having ratio 1:2 . There diameter ratio will be a)1:2 b)1:4 c) 4:1 d) 1:√2
Answer» Faa=πr2a∝r2a1a2=(R1R2)2=(21)2⇒4S1S2=F/a1F/a2=(a2a1)=14Ratio of STRESS is 1 : 4Hence (D) is the CORRECT answer.

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Two conducting wires of same material and of equal lengths , resistance and resistivity having ratio 1:2 . There diameter ratio will be a)1:2 b)1:4 c) 4:1 d) 1:√2

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