Question

Two copper wires have length ratio 1 : 2 and ratio of area of cross-section is 4: 1. Then ratio of resistances of the two wires are​

Answer 1

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Answer 2

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Two copper wires have length ratio 1 : 2 and ratio of area of cross-section is 4: 1. Then ratio of resistances of the two wires are

step-by-step–—–explanation : )

Correct option is D)

Correct option is D)The resistance R is given by, R= P

Correct option is D)The resistance R is given by, R= PNow volume of the wire is V = A x 1 or

Correct option is D)The resistance R is given by, R= PNow volume of the wire is V = A x 1 orV 1 A =

Correct option is D)The resistance R is given by, R= PNow volume of the wire is V = A x 1 orV 1 A =Using this in first equation:R =P ( 1 ). Sc p So

Correct option is D)The resistance R is given by, R= PNow volume of the wire is V = A x 1 orV 1 A =Using this in first equation:R =P ( 1 ). Sc p SoRx 12 for the wires of same volume and

Correct option is D)The resistance R is given by, R= PNow volume of the wire is V = A x 1 orV 1 A =Using this in first equation:R =P ( 1 ). Sc p SoRx 12 for the wires of same volume andsame material. R₁ 2122 1²

Correct option is D)The resistance R is given by, R= PNow volume of the wire is V = A x 1 orV 1 A =Using this in first equation:R =P ( 1 ). Sc p SoRx 12 for the wires of same volume andsame material. R₁ 2122 1²R2

Correct option is D)The resistance R is given by, R= PNow volume of the wire is V = A x 1 orV 1 A =Using this in first equation:R =P ( 1 ). Sc p SoRx 12 for the wires of same volume andsame material. R₁ 2122 1²R21/2

Correct option is D)The resistance R is given by, R= PNow volume of the wire is V = A x 1 orV 1 A =Using this in first equation:R =P ( 1 ). Sc p SoRx 12 for the wires of same volume andsame material. R₁ 2122 1²R21/2But 1₁ 12 12 2