A circular loop of one turn carries a current of 5.00 A. If the magnetic field B at the centre is 0.200 mT, find the radius of the loop.

Question

Philoid · Accepted Answer

Given:
No. of turns, n = 1
Magnitude of current, i = 5.00 A
the magnetic field at the center due to the current in the loop is given by

We know that

Now,

Where B=Magnetic Field= 0.2 mT

r= radius of loop