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Magnetism and Electricity When electric current flows through a wire, a ___________________ forms around the wire. Strength of magnetic field depends on _____________________________________________________________ What are electromagnets? Increase strength of the magnetic field by ___________________________ to wire coil or ________________________ passing through the wire. What is an electric motor? A device that changes _______________________ into _____________________. In a simple electric motor, an electromagnet rotates between the poles of a permanent magnet. Direct and Alternating Current Direct Current (DC): Alternating Current (AC): Magnetism and Electricity When electric current flows through a wire, a ___________________ forms around the wire. Strength of magnetic field depends on _____________________________________________________________ What are electromagnets? Increase strength of the magnetic field by ___________________________ to wire coil or ________________________ passing through the wire. What is an electric motor? A device that changes _______________________ into _____________________. In a simple electric motor, an electromagnet rotates between the poles of a permanent magnet. Direct and Alternating Current Direct Current (DC): Alternating Current (AC):