A circular coil of radius 0.05 m, with 30 turns of wire, lies in a horizontal plane. It carries a current of 5 A in a counterclockwise sense when viewed from above. The coil is in a uniform magnetic field directed toward the right, with magnitude 1.2 T. Illustrate the problem. Find the magnitudes of the magnetic moment and the torque on the coil. [Hint: Treat the circular coil just as a rectangular or square shaped coil.]

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

Since the pully is a simple machine so the mechanical advantage is a 1