Problem-1: (Electric motors) Torque on current loops- You know that much of the world's work is done by electric motors. The forces behind this work are magnetic forces that we have studied.The forces that a magnetic field exerts on a wire that carries a current. (a) draw the figure for a simple motor with brushes, consisting of N current carrying loops immersed in a magnetic field B. Also show the magnetic forces on the loops with directions. (b) Find the magnitude & direction of the forces that act on the loops which tend to rotate them. (c) Find the total torque(t) on the loops.

Problem-1: (Electric motors) Torque on current loops- You know that much of the world's work is done by electric motors. The forces behind this work are magnetic forces that we have studied.The forces that a magnetic field exerts on a wire that carries a current. (a) draw the figure for a simple motor with brushes, consisting of N current carrying loops immersed in a magnetic field B. Also show the magnetic forces on the loops with directions. (b) Find the magnitude & direction of the forces that act on the loops which tend to rotate them. (c) Find the total torque(t) on the loops.