Question

Magnetic field at point $O$ will be :

• A. $\frac{{\mu }_{0}I}{2R}$ interior
• B. $\frac{{\mu }_{0}I}{2R}$ exterior
• C. $\frac{{\mu }_{0}I}{2R}\left(1-\frac{1}{\pi }\right)$ interior
• D. $\frac{{\mu }_{0}I}{2R}\left(1+\frac{1}{\pi }\right)$ exterior

Answer 1

Answer: (A)

Magnetic field at the centre of circular loop $B=\frac{{\mu }_{0}I}{2R}$ interior.