Engineering Unit 4 Electricity

4. The measure of an object’s opposition to a flow of electric current
6. An electrical current type in which the flow of electrical charge periodically reverses direction
8. An electric charge that collects or builds up on the surface of an object: The rubbing of some materials can transfer negative charges/electrons
9. The total amount of electric charge carried through a material such as wire or other conductors over a period of time
10. ____ out: A complete loss of power
12. Basic safety devices widely deployed in electrical circuits for excess current or overcurrent protection
15. An electric current type that flows consistently in one single direction. The intensity of the current does not vary with time
18. Device that changes direct current (DC) to alternating current (AC)
19. _____ circuit: when electricity strays outside the wires it is supposed to flow through
21. Measures the rate of energy transfer. The rate at which electrical work is done when one amp (A) of current flows through one volt (V)
23. Circuit where components are connected end-to-end. There is only a single path for current to flow
25. Uncharged atomic particles
26. The pressure that forces electric current to flow through a wire
28. Materials that do not allow electric charges to flow freely through them/Electron flow is difficult between atoms

1. Any material that allows electric charges to move through it /Electrons flow easily between atoms
2. Measures the flow: The rate that current flows through an electrical circuit
3. Positively charged atomic particles
5. Circuit where both ends of the components are connected together. There are multiple paths for current to flow
7. The center portion of an atom containing the protons and neutrons
11. A system of conductors and components forming a complete path for current to travel
13. A form of energy made up of charges, can produce light/heat/motion
14. Measures the resistance inherent in any electrical wire
16. ____ out: A temporary power reduction
17. An instrument used to measure the properties of an electrical circuit, including amps, ohms, volts
20. Components that create resistance and control resistance
22. Electrical circuit that is complete and allows electricity to flow through
24. Negatively charged atomic particles
27. An electrical circuit where current is unable to flow
29. Law that states that current in a resistor varies in direct proportion to the voltage applied to it and is inversely proportional to the resistor’s value