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1. Current flowing in one direction.
4. A device for controlling the flow of electricity.
7. A source of DC power.
10. A material that allows electricity to flow easily.
12. Energy transmitted through space in the form of waves.
17. The flow of electrical charge measured in amperes
18. The unit of measurement for electrical potential difference.
19. The energy associated with the movement of electrons.
20. A safety device that melts and breaks the circuit when overloaded.
21. Particles that cannot be broken into smaller pieces without losing its properties.
23. A device that increases the strength of an electrical signal.
24. A plastic part that surrounds the outside of an integrated circuit chip.

2. A closed path through which electricity flows.
3. A material that resists the flow of electricity.
5. A device that stores electrical energy in an electric field.
6. A connection to the earth providing a safe path for current in case of a fault.
8. The electrical potential difference measured in volts
9. Opposition to the flow of current measured in ohms
11. A safety device that automatically interrupts a circuit when overloaded.
12. Consists of the basic components needed to utilize electrical energy
13. Current that periodically reverses direction.
14. The unit of electrical resistance.
15. A device that transfers electrical energy between circuits.
16. The rate at which electrical energy is transferred measured in watts
22. The unit of measurement for power.
25. The unit of electrical current.