A long cylindrical copper wire of radius carries a steady current of uniformly…

PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

A long cylindrical copper wire of radius

2\,\text{cm}

carries a steady current of

20\,\text{A}

uniformly distributed over its cross-section. Find the current enclosed by a circular Amperian path of radius

1\,\text{cm}

coaxial with the wire. (a)

20\,\text{A}

(b)

10\,\text{A}

(c)

5\,\text{A}

(d)

2.5\,\text{A}