Physics - Magnetism Question with Solution | TestHub

A long rigid wire lies along the$\text{X}$- axis and carries a current of$10 \text{A}$in the positive$\text{X}$- direction. Round the wire, the external magnetic field is$\overrightarrow{B}=\hat{\mathrm{i}}+2x^2\hat{\mathrm{j}}$with$x$in meters and$B$in Tesla. The magnetic force (in$\text{S}\text{I}$units) on the segment of the wire between$x=1 \text{m}$and$x=\mathrm{4 }\text{m}$is