1 Chapter 20 Review activity! Fun in B208!

 A. Unit of energy  B. Unit of charge  C. Unit of current  D. Unit of voltage. 2 What is a coulomb?

 A. current.  B. voltage.  C. power  D. conductance 3 The motion of charges in wires is best called electric:

 A. current.  B. voltage.  C. power  D. resistance. 4 An ohm is the unit of measurement for:

 A. current.  B. voltage.  C. power  D. resistance. 5 An amp is the unit of measurement for:

 A. is on  B. is off  C. is left behind  D. is Ohm’s Law 6 An open circuit:

 A. a store at the mall.  B. potential difference.  C. flowing charges.  D. resistance. 7 The term current refers to:

 A. a store at the mall.  B. potential energy.  C. flowing charges.  D. resistance. 8 The term voltage refers to:

 A. a store at the mall.  B. potential energy.  C. flowing charges.  D. resisting the flow of current. 9 The term resistance refers to:

 A. an absorber.  B. a conductor.  C. a semiabsorber.  D. an insulator. 10 Electrical current will not pass easily through:

 A. positively charged  B. negatively charged  C. neutral  D. none of the above 11 An object with equal positive and negative charge is?

 A. It increases  B. It decreases  C. It stays the same  D. There is no current 12 If voltage increases, what happens to current?

 A. It increases  B. It decreases  C. It stays the same  D. There is no current 13 If resistance increases, what happens to current?

 A. I = V/R  B. V=IR  C. R=V/I  D. all of these 14 What is Ohm’s Law?

 A. 10   B. 15   C   D. 960  15 If 8.0 amperes of current flows with a voltage of 120 volts what is the resistance? I = V/R

16 In the circuit below, 8 amperes of current passes through the light bulb. The resistance of the light bulb is 2 ohms. What is the voltage of the battery? A. 16 Volts B. 4 Volts C. 32 Volts D. None of these

17 A light is plugged into a 120-volt outlet. If it has a resistance of 360 ohms, how much current does it use? A. 3 amps B amps C amps D. None of these

Switches 2 and 3 are open, and all others are closed. What devices are on? A B C D E F G

Switches 4 and 6 are open, and all others are closed. What devices are on? A B C D E F G