Transcript Chapter 20 Test Review

Chapter 20 Review activity!
Fun in B208!
1
What is a coulomb?




A. Unit of energy
B. Unit of charge
C. Unit of current
D. Unit of voltage.
2
The motion of charges in wires is best
called electric:




A. current.
B. voltage.
C. power
D. conductance
3
An ohm is the unit of
measurement for:




A. current.
B. voltage.
C. power
D. resistance.
4
An amp is the unit of
measurement for:




A. current.
B. voltage.
C. power
D. resistance.
5
An open circuit:

A. is on

B. is off

C. is left behind

D. is Ohm’s Law
6
The term current refers to:




A. a store at the mall.
B. potential difference.
C. flowing charges.
D. resistance.
7
The term voltage refers to:




A. a store at the mall.
B. potential energy.
C. flowing charges.
D. resistance.
8
The term resistance refers to:




A. a store at the mall.
B. potential energy.
C. flowing charges.
D. resisting the flow of current.
9
Electrical current will not pass easily
through:




A. an absorber.
B. a conductor.
C. a semiabsorber.
D. an insulator.
10
An object with equal positive and
negative charge is?




A. positively charged
B. negatively charged
C. neutral
D. none of the above
11
If voltage increases, what happens
to current?




A. It increases
B. It decreases
C. It stays the same
D. There is no current
12
If resistance increases, what
happens to current?




A. It increases
B. It decreases
C. It stays the same
D. There is no current
13
What is Ohm’s Law?




A. I = V/R
B. V=IR
C. R=V/I
D. all of these
14
If 8.0 amperes of current flows with a
voltage of 120 volts what is the resistance?




A. 10 W
B. 15 W
C. 0.067 W
D. 960 W
I = V/R
15
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?




16
A. 16 Volts
B. 4 Volts
C. 32 Volts
D. None of these
A light is plugged into a 120-volt outlet. If it has a
resistance of 360 ohms, how much current does
it use?




17
A. 3 amps
B. 42300 amps
C. 0.33 amps
D. None of these
Switches 2 and 3 are open, and all others
are closed. What devices are on?
ABCDEFG
Switches 4 and 6 are open, and all others
are closed. What devices are on?
ABCDEFG