Physics - Magnetism Question with Solution | TestHub

An element $\Delta l=\Delta x\hat{i}$ is placed at the origin and carries a large current $I=10\mathrm{A}$. The magnetic field on the $y$-axis at a distance of $0.5\mathrm{m}$ from the elements $\Delta x$ of $1\mathrm{cm}$ length is: