Question

Due to the presence of the current $I_1$ at the origin in the figure,

• A. the forces on $AB$ and $DC$ are zero
• B. the forces on $AD$ and $BC$ are zero
• C. the magnitude of the net force on the loop is given by $\frac{I_{1}I}{4\pi }{\mu }_0\left[2\right(b-a)+\frac{\pi }{3}(a+b\left)\right]$
• D. the magnitude of the net force on the loop is given by $\frac{{\mu }_{0}I{I}_1}{24ab}(b-a)$

Answer 1

The correct option is B the forces on $AD$ and $BC$ are zero

Any current flowing wire generate magnetic filed in circular direction therefore, here $AD$ and $BC$ are parallel to the magnetic field and angle will be $0^{\circ }and{180}^{\circ }$

Hence, forces will be Zero.