defence exam ITBP (Telecommunication) Head Constable Mock Test 2024 Physics Moving Charges and Magnetism Magnetic Field on the Axis of a Circular Current Loop
Magnetic field at the center of a circular loop carrying a current I and of radius R is:
1
\(\frac{I}{{2\pi {\mu _0}R}}\)
2
\(\frac{{{\mu _0}I}}{{2R}}\)
3
μ0IR
4
\(\frac{{2{\mu _0}I}}{R}\)