Question
A circular loop of radius $R$ carries current $I$. The magnetic field at a point on the axis at distance $x$ from the center is:
Options
- A
$\frac{\mu_0 I R^2}{2(R^2 + x^2)^{3/2}}$
- B
$\frac{\mu_0 I}{2R}$
- C
$\frac{\mu_0 I R}{2(R^2 + x^2)}$
- D
$\frac{\mu_0 I x^2}{2R^3}$