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Magnetic Field of Current-Carrying Wire
Finding the direction of the magnetic field created by a current-carrying wire, with introduction to the right hand rule and a demo of a compass needle responding to the current through a wire.
Fields and Forces From Two Current-Carrying Wires
Forces felt by two parallel current carrying wires, when the currents are in the same or in opposite directions. Includes a demonstration of these forces.
Motor With Human Commutator
Creating a motor from a current loop where the current is manually reversed after every 180° of rotation.