Across
- 4. electric circuit where the electric current can take more than one path.
- 6. rotating part of an electric motor containing electromagnets.
- 10. an object or type of material that allows the flow of electrical current in one or more directions.
- 11. coil of wire, usually cylindrical, that uses electric current to create a magnetic field.
- 13. The force exerted by magnets when they attract or repel each other.
- 16. instrument used to detect very small electric currents by detecting the magnetic force on a loop of wire.
- 17. An electric current that reverses its direction many times a second at regular intervals, typically used in power supplies.
- 18. flow of electric current through a conductor.
- 19. buildup of electrical charge, either positive or negative, on the surface of an insulating material.
- 21. to develop a magnetic field in an object in response to applying an external magnetic field.
- 28. condition of a system that describes opposing physical characteristics.
- 29. amount of electrical potential energy that each unit of electric charge has.
- 30. opposition that a conducting material or device offers to resist the flow of current.
Down
- 1. The resistance that one surface or object encounters when moving over another.
- 2. study of electric charges at rest.
- 3. Device that increases or decreases voltage in AC circuits in order to minimize energy lost during transmission.
- 5. magnets that are created by the flow of electricity.
- 7. interaction of electric currents and magnetic fields.
- 8. electric circuit where the switch is connected, allowing electricity to flow through the circuit.
- 9. device attached to the armature of a motor that provides an electrical connection and allows the direction of current to be changed periodically during the rotation of the motor.
- 12. device that transforms or converts chemical energy into electrical energy or electric current.
- 14. Production of an electric current by changing the magnetic field enclosed by an electrical circuit.
- 15. a substance that does not readily allow the passage of heat or sound.
- 20. electric circuit with a break that prevents electricity from flowing through it
- 22. An instrument for measuring electric current in amperes.
- 23. two regions in a magnetic field that produce the strongest magnetic force.
- 24. An electric current flowing in one direction only.
- 25. vacuum tube in which a cathode emits a beam of electrons that are deflected by magnetic fields before hitting a phosphorescent screen.
- 26. instrument used to measure the voltage, or potential difference, across one or more components of a closed circuit
- 27. measure of the strength of a magnetic field through an area.