Question

The resistance of a conductor of length l is p. if its area of cross section is q. What is its resistivity? What is its unit? pls answer fast

Answer 1

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The resistance of a conductor of length l is p. if its area of cross section is q. What is its resistivity? What is its unit?

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Here I have taken 'l' as x and 'p' as r

R = resistance,

P = a constant which is of the characteristics of the material of the wire and is called the specific resistance,

l = length.

§ = directly proportional to

r = radius

R § l

R § 1/ a or R § p l/ a = p l/pie x square of r

unit of p = unit of R x unit of a / unit of l

ohm x metre square/metre

The unit is ohm x metre

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Answer 2

Here I have taken 'l' as x and 'p' as r

R = resistance,

P = a constant which is of the characteristics of the material of the wire and is called the specific resistance,

l = length.

§ = directly proportional to

r = radius

R § l

R § 1/ a or R § p l/ a = p l/pie x square of r

unit of p = unit of R x unit of a / unit of l

ohm x metre square/metre

The unit is ohm x metre