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A cylindrical tube of length L has inner...

A cylindrical tube of length L has inner radius a while outer b. What is the resistance of the tube between its inner and outer surfaces? [The resistivity of its material is `rho`]

A

`rho(2pi L)ln((b)/(a))`

B

`(rho)/(4pi L)ln((b)/(a))`

C

`(rho)/(2piL)ln((2b)/(a))`

D

`(rho)/(piL)ln((b)/(a))`

Text Solution

Verified by Experts

The correct Answer is:
B
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