A rectangular coil of wire with 25 loops carries a current of 24.2 mA. The coil's dimensions are 8.5 cm by 2.3 cm.
a) What is the magnetic moment of the coil?
b) What is the strength of the field created by the coil a distance of 49.2 cm from the center of the coil along an axis that is perpendicular to the plane of the coil?