1. Consider a toroidal coil with relative permeability of 1500 with a circular cross section whose radius is 0.025 cm. The outside radius of the toroid is 0.2 cm. Find the inductance of the coil assuming that N = 10 turns.
2. The eddy-current and hysteresis losses in a transformer are 450 and 550 W, respectively, when operating from a 6O-Hz supply with an increase of 10% in flux density. Find the change in core losses.