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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A copper wire with density ρ with cross-sectional area S bent to make three sides of a squae frame which can turn about a horizontal axis OO’ as shown in figure. The wire is located in uniform vertical magnetic field. Find the magnetic induction if on passing a current I through the wire the frame deflects by an angle θ in its equilibrium position.

A copper wire with density ρ with cross-sectional area S bent to make three sides of a squae frame which can turn about a horizontal axis OO’ as shown in figure. The wire is located in uniform vertical magnetic field. Find the magnetic induction if on passing a current I through the wire the frame deflects by an angle θ in its equilibrium position.

find the resultant magnetic force and torque about C and P. In the figure