Question

A long cylindrical wire (radius = 2.0 cm) carries a current of 49 A that is uniformly distributed over the cross-section of the wire. What is the magnitude of the magnetic field at a point which is 1.5 cm from the axis of the wire?

Answer 1

SOLUTION;

I=49A

R= Radius =2 cm = 0.02 m

r = 1.5 cm = 0.015 m

B= magnitude magnatic field

We know that,

B= 0.37 mT

The magnitude magnatic field is = 0.37 mT

0.37 mT