Question 50 of 276

A single current carrying loop of wire carrying current $I$ flowing in anticlockwise direction seen from $+vez$ direction and lying in $xy$ plane is shown in figure. The plot of $\hat{j}$ component of magnetic field $(By)$ at a distance $a$ (less than radius of the coil) and on $yz$ plane $vsz$ coordinate looks like

ABCD

Show answer and solution▾

Answer: (C)

Magnetic field in plane of coil is ${B}_{y}=0$
The direction of $\hat{j}$ component of magnetic field ${B}_{y}$ is opposite of each other in $–z$ and $+z$ positions.
So, the variation of magnetic field is shown below.