E&M > Magnetic Fields and Forces > Magnetic Fields DCS# 5H15.40
MAGNETIC FIELD OF A COIL OF WIRE
magnetic field of a coil
APPARATUS
coil of wire 202-20-A
4 A DC power supply 202-08-D
probe with compass needle 202-20-D
overhead projector or video camera 201A

DESCRIPTION
With power supply set to about 4 A, probe coil with compass needle to show shape of magnetic field.

NOTES

Focus overhead projector on plane through center of coil.