A long cylindrical conductor forms a thick hollow tube with inner radius and outer…

PHYSICS · Subjective · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

A long cylindrical conductor forms a thick hollow tube with inner radius

a

and outer radius

b

(

b>a

). A steady current

I

is uniformly distributed throughout the metal of the tube. Derive an expression for the current

I_{\text{enc}}(r)

enclosed by a circular path of radius

r

centred on the common axis for: (i)

a < r < b

(ii)

r > b

Express each answer in terms of

I

a

b

and

r