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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > In Figure (a), two concentric coils, lying in the same plane, carry currents in opposite direction. The current in the larger coil 1 is fixed. Current i2 in coil 2 can be varied. Figure (b) gives the net magnetic moment of the two-coil system as a function of i2. The vertical axis scale is set by μ≠t,s=2.0×10−5A.m2, and the horizontal axis scale is set by i2s=10.0mA. If the current in coil 2 is then reversed, what is the magnitude of the net magnetic moment of the two-coil system when i2 = 7.0 m A?

In Figure (a), two concentric coils, lying in the same plane, carry currents in opposite direction. The current in the larger coil 1 is fixed. Current i2 in coil 2 can be varied. Figure (b) gives the net magnetic moment of the two-coil system as a function of i2. The vertical axis scale is set by μ≠t,s=2.0×10−5A.m2, and the horizontal axis scale is set by i2s=10.0mA. If the current in coil 2 is then reversed, what is the magnitude of the net magnetic moment of the two-coil system when i2 = 7.0 m A?

40 A current loop at angle θ=30∘ to the direction of a uniform magnetic field of magnitude 0.50 T. In unit-vector notation carrying a current of 5.0 A Figure shows a rectangular 20-trun coil of wire of dimensions 10 cm by 5.0 cm. It carries a current of 0.10 A and is hinged along one long side. It is mounted in the xy. Plane has 3.00 turns and an area of 4.00×10−3m2 In Figure (a) is in the shape of a right triangle with sides 30 lying in the same plane The coil in figure carries current i=2.00 A in the direction indicated is parallel to an xz plane two concentric coils what is the torque acting on the coil about the hinge line?