PURPOSE: To demonstrate that there is a torque on a current loop in a
magnetic field.
DESCRIPTION: A few-turn coil is positioned in the magnetic field of the
elctromagnet magnet of a motor as shown in the
photograph. Pushing the switch connects the power to the coil, passing electrical current
through the coil and creating the
torque, which is clearly visible as rotation of the coil about its axis. Reversing the
coil leads reverses the direction of the
torque.
EQUIPMENT: Electromagnetic motor is stored in room 055.
SETUP NOTES: None.