QJEEM23Phfda0: JEE Main 2023 Physics - Class 12 JEEM23Phfda0 Solution: A massless square loop, of wire of resistance , supporting a…

A massless square loop, of wire of resistance $10 \Omega$ , supporting a mass of $1 \mathrm{~g}$ , hangs vertically with one of its sides in a uniform magnetic field of $10^{3} \mathrm{G}$ , directed outwards in the shaded region. A dc voltage $\mathrm{V}$ is applied to the loop. For what value of $\mathrm{V}$ , the magnetic force will exactly balance the weight of the supporting mass of $1 \mathrm{~g}$ ?

(If sides of the loop $=10 \mathrm{~cm}, \mathrm{~g}=10 \mathrm{~ms}^{-2}$ )