Chapter 11 Vocabulary

2. a single package containing several cells connected together to produce a DC current
3. lines that transport high-voltage electricity from the generating station to a step-down transformer at an electrical substation
5. in an alternating current, the number of complete cycles per second
8. a closed path in which current can travel
11. a simple cell consisting of copper and zinc rods immersed in a weak sulfuric acid solution
12. a material through which electric current flows easily
13. loops of wire, or coils, mounted around the inside of a generator housing
14. a single DC power source consisting of a positive electrode, a negative electrode, and an electrolyte
16. a device that chemically stores electricity; its electrode is gradually used up during normal use, and it cannot be recharged
18. the positive electrode in a dry cell
19. a measure of the amount of current in a circuit
21. in alternating current, a period during which electricity flows or pulses in one direction, then in the other direction
24. an electric current whose strength and direction vary on a regular basis
26. magnetism created by passing an electric current through a wire to create a magnetic field around the wire
27. theory of electricity in which electrons jump from one atom to the next along a conductor to create an electric current

1. a device for storing electrical energy as a chemical; it can be charged, discharged, and recharged
4. lines that transport lower-voltage electricity from a step-down transformer at an electrical substation
6. a solution in a cell that reacts with the electrodes in a chemical reaction that creates electric current
7. the split ring in a DC generator that sends currents through the circuit in one direction only
9. current that maintains a constant flow in one direction
10. the flow of electrons in a circuit
15. a conductor, usually metal, that transfers electrical energy into and out of a dry cell or battery
17. a machine that produces electricity when turned by an outside force such as a turbine
20. the force that pushes electrons through a circuit
22. the ability of a material to attract pieces of iron or steel
23. the negative electrode in a dry cell
25. a measure of electrical pressure