stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Electricity, Ohms Laws, Circuits Flashcards | StudBud
Explore
/
Electricity, Ohms Laws, Circuits
Electricity, Ohms Laws, Circuits
30 terms
·
StudBud Administration
·
337 plays
Physics- electricity, ohms laws, and circuits.
Flashcards
30 cards
F
Practice quiz
P
Host live
L
Questions
30
Answers
1
How much power is used by a 12.0 V car battery that draws 0.5 A of current?
12 W
0.5 W
24 W
6 W
2
Electric power is defined as
current times voltage
resistance times voltage
current divided by voltage
current times resistance
3
Abbreviation for Amps
A
Watts
Amps
4
An example of a voltage source is
all of the above
a dry cell
a car battery
a generator
5
Decreasing voltage means decreasing current
true
false
6
Compare the filament thickness on a 60-W light bulb, w/ filament thickness of 100-W light bulb
less
the same
greater
7
Unit for Voltage
volts
ohms
amps
joules
8
More than one path for the electricity to flow
series circuit
parallel circuit
9
Dependent paths
series circuit
parallel curcuit
10
Electrical resistance is measured in
watts
joules
volts
none of the above
11
12 V battery in CD player, what is the potential difference across the entire player?
12 V
6 V
4 V
3 V
12
Power outlets in our homes typically have a potential difference of
120 V
120 A
60 V
30 V
13
Only one path for the electricity
parallel circuit
series circuit
14
Connecting 110 V power supply, how much current is in a light bulb that has a resistance 220Ω?
.5 A
110 A
220 A
2.0 A
15
light bulb is plugged into 120 V outlet and has 0.7 A current. What's the power rating?
17 W
84 W
120 W
12 W
16
When plugged into a 120 V wall outlet, how much current is used by an 140 W electric blanket?
140 A
1.2 A
120 A
16,800 A
17
Increasing resistance means decreasing current
false
true
18
120 W light bulb is connected to a 120 V outlet. How much current is in light bulb?
1 A
2 A
0.5 A
6 A
19
How your house is wired
series circuit
parallel circuit
20
Current equals the voltage divided by the resistance
true
false
21
15 ohm resistor has a 5 A current in it. What is the voltage across the resistor?
25 V
15 V
more than 25 V
20 V
22
60 W light bulb and a 100 W bulb are both rated at 120 V. Which light bulb is larger?
60 W bulb
100 W bulb
both have the same resistance
23
Resistance slows down a current
true
false
24
Resistors with values 4Ω, 6Ω, and 10Ω are connected in parallel. What's equivalent resistance?
7.3 Ω
6 Ω
20 Ω
1.9 Ω
25
An ampere is a
unit of resistance.
unit of current.
type of charge
current
26
8V battery connected to resistor 2A current flows in the resistor. What's the resistor's value?
16 ohms
4 ohms
8 ohms
2 ohms
27
The current through a 5 ohm resistor connected to a 150 V power supply is
30 A
150 A
1 A
10 A
28
What is the resistance of a toaster that uses 5 A of current when connected to a 120 V power?
24 ohms
5 ohms
600 ohms
120 ohms
29
Power line with resistance of 9 ohms has a current of 80 A in it. Power dissipated in the line
720 W
360 W
1,440 W
57,660 W
30
Increasing voltage means increasing current
false
true
