1. Ch 8-9 Review

2. What is the current flowing through this circuit? 3 A

3. In a circuit, 5 amperes of current passes through the light bulb. The resistance of the light bulb is 1.5 ohms. What is the voltage of the battery? V = IR 7.5 V

4. If electricity costs 10 cents per kilowatt-hour, how much does it cost to run a 100-watt light bulb for one hour? 100/1000=.1 x.1 = $.01

5. Which figure(s) above is a parallel circuit? I and II

6. Calculate the total resistance of the series circuit if each resistor is 2 ohms. 6 ohms

7. What device designed to open an overloaded circuit and prevent overheating? Circuit breaker or fuse

8. The value of current is the same at all points in a ______circuit. series

9. A measure of the potential energy of an electric charge voltage

10. A material through which charges do not flow insulator

11. The flow of electric charges in a circuit current

12. The rate at which energy flows in a particular circuit power

13. Describe how you could quickly determine whether a string of lights is wired in series or in parallel. Remove one bulb. If it's a series, all the lights will go out; if it's parallel, the remaining lights will stay lit.

14. Which of the following is the correct relationship among power, current, and voltage? a. P = I/V b. V = P I c. P = I V d. E = P t C

15. The property of a material that allows charge to flow Conductivity

16. What electrical symbol is represented below? resistor

17. *** Given an example of a series circuit. Christmas lights

18. What type of circuit is pictured? series

19. How many batteries are in the circuit below? 2

20. What electrical symbol is represented below? Light bulb