Physics - Magnetism Question with Solution | TestHub

A wire carrying a steady current $I$ is kept in the $x$-y plane along the curve $y=A\sin \left(\frac{2\pi }{\lambda }x\right)$. A magnetic field $B$ exists in the $z$-direction. The magnitude of the magnetic force in the portion of the wire between $x=0$ and $x=\lambda$ is