Across
- 2. an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons
- 3. he elements which form negative ions by accepting or gaining electrons.
- 5. a substance or material that allows electricity to flow through it
- 8. an electrical component that limits or regulates the flow of electrical current in an electronic circui
- 9. a negatively charged subatomic particle that can be either bound to an atom or free (not bound)
- 14. a semiconductor device that essentially acts as a one-way switch for current
- 15. a substance that conducts heat, electricity, or sound only in very small degree.
- 17. an instrument for measuring electric potential in volts
- 18. a flow of electrical charge carriers, usually electrons or electron-deficient atoms
- 19. an electrical safety device that operates to provide overcurrent protection of an electrical circuit
- 20. device for producing illumination
Down
- 1. A material or an object that does not easily allow heat, electricity, light, or sound to pass through it
- 4. an instrument used to measure the current in a circuit
- 6. a black rock formed from prehistoric plant remains, composed largely of carbon and burned as a fuel.
- 7. situated at the farthest possible point from a center
- 10. an electrical conductor used to make contact with a nonmetallic part of a circuit
- 11. a device for converting a power supply to a voltage required by particular equipment
- 12. the flow of electrical power or charge
- 13. joined or linked together
- 16. a chemical element (such as boron, carbon, or nitrogen) that lacks the characteristics of a metal