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Alex's Puzzle

Across
A coil that has a soft iron core and acts as a magnet when an electric current is in the coil.
A device that converts mechanical energy to electrical energy.
A rotating coil of an electric motor.
An electric current flowing in one direction only.
The process of creating a current in a circuit by changing a magnetic field.
Accidentally discovered the connection between electricity and magnetism with a compass.
A machine that uses electromagnets and radio waves to "see" inside the body.
When it is on a galvanometer, it shows the current direction and strength.
A device that increases or decreases the voltage of alternating current.
Down
Help turn magnets inside coils of wire generating electricity.
An electric current that can reverse its direction many times.
A coil of wire that carries an electric current and therefore produces a magnetic field.
Results when electric currents and magnetic fields interact with each other.
A device that converts electrical energy into mechanical energy.
A device that measures the strength and direction of an electric current in a wire.
The amount of work to move a unit electric charge between two points.
A device that reverses the direction of flow of an electric current.