Introduction to Magnetism, Force on Dielectric in Charged Capacitor Class 12 Physics | JEE Main 2023

In an experiment, a current-carrying rectangular loop of wire is suspended in a uniform magnetic field. It is held in place by a pair of torsion balances. Torsion balances are lengths of material that allow twisting due to a net torque exerted on an object but deliver a counter torque proportional to the angle of twist. The amount of current that travels through the loop remains constant. The uniform magnetic field is varied, and the angle of twist θ is measured. Which of the following observati

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A conductor of length 0.04 m is tangentially connected to a circular loop of radius 0.03 m perpendicular to its plane. Find the magnetic field induction at the centre of the loop, if 4 A current is passed through the conductor as shown in figure.