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