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A long copper tube of inner radius R car...

A long copper tube of inner radius `R` carriers a current `i`. The magnetic field `B` inside the tube is

A

`((mu_0 i)/(pi R^2)) cdot r`

B

`((2mu_0 i)/(pi R^2)) cdot r`

C

`((mu_0 i)/(2pi R^2)) cdot r`

D

`((mu_0 i)/(2pi R)) cdot r`

Text Solution

Verified by Experts

The correct Answer is:
C
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