Exam

NEET

Year

2016

Subject

Physics

Chapter

Magnetic Effects of Current

NEET 2016 · Physics · Magnetic Effects of Current

A square loop ABCD carrying a current i , is placed near and...

A square loop $ABCD$ carrying a current $i$, is placed near and coplanar with a long straight conductor $XY$ carrying a current $I$, the net force on the loop will be:

Step-by-step solution

${F}_{1} = \dfrac{{\mu}_{0}IiL}{2\pi\dfrac{L}{2}} = \dfrac{{\mu}_{0}Ii}{\pi}$

${\text{F}}_{\text{2}} = \dfrac{{\mu}_{0}IiL}{2\pi\dfrac{3L}{2}} = \dfrac{{\mu}_{0}Ii}{3\pi}$



$∴ {F}_{net} = {F}_{1} - {F}_{2}$

${F}_{net} = \dfrac{2}{3}\dfrac{{\mu}_{0}Ii}{\pi}$