A student makes a short electromagnet by winding 500 turns of wire around a wooden cylinder of diameter d = 4.0 cm. The
Posted: Sat Jul 02, 2022 7:04 pm
A student makes a short electromagnet bywinding 500 turns of wire around a wooden cylinder ofdiameter d = 4.0 cm. The coil isconnected to a battery producing a current of 3.3 A inthe wire. (a) What is the magnitude ofthe magnetic dipole moment of thisdevice? (b) At what axialdistance z >> d willthe magnetic field have the magnitude 6.9 µT(approximately one-tenth that of Earth's magnetic field)?