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Electricity Review

Total questions: 47

Worksheet time: 12hrs 45mins

Name
Class
Date
1.
If each of the charges doubles, what happens to the electric force?
a)
Quadruples
b)
Doubles
c)
Stays the same
d)
Reduced by half
2.
If the distance between 2 charges doubles, what happens to the electrostatic force?
a)
Reduced by half
b)
Reduced by 1/4
c)
Stays the same
d)
Quadruples
3.

Calculate the force exerted between two charged objects separated by a distance of 0.6 m. One object has a charge of -5 C and the other has a charge of +2.0 C.

a)

-1.5E-11 N

b)

2.5E11 N

c)

-2.5E11 N

d)

-7.5E-10 N

4.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
5.
The distance between two charges doubles at the same time that the charge on each also doubles.  What happens to the electric force?
a)
doubles
b)
quadruples
c)
cut in half
d)
no change
6.
Two charges separated by a distance of 1 meter exert a 20-N force on each other. If the charges are pulled to a 2 meter separation distance, the force on each charge will be 
a)
10 N
b)
5 N
c)
2.5 N
d)
40 N
7.

The image shows two charged particles with a force of 2.4 N. What would you predict the force of interaction would be when the distance doubles?

a)

4.8 N

b)

1.2 N

c)

.6 N

d)

.3 N

8.
At which point is the electric field the strongest
a)
A
b)
B
c)
C
d)
D
9.
At which point is the electric field the weakest?
a)
A because it is the furthest away
b)
A because the field lines are further apart
c)
C because the field lines are further apart
d)
C  because it is the furthest away
10.

Two plates are 2cm apart, a potential difference of 10 V is applied between them, the electric field between the plates is

a)

20 N/C

b)

500 N/C

c)

5 N/C

d)

250 N/C

11.

A charge of 5 C experiences a force of 5000 N when it is kept in a uniform electric field. What is the potential difference between two points separated by a distance of 1cm

a)

10 V

b)

250 V

c)

1000 V

d)

2500 V

12.

The radius of a soap bubble whose potential is 16V is doubled. The new potential of the bubble will be

a)

8V

b)

2V

c)

4V

d)

16V

13.
The picture shows an electrical circuit. This circuit is a series circuit because: 
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current is divided between the three light bulbs.
14.
This type of circuit only has one path for current to flow. 
a)
series
b)
parallel
c)
combination
d)
split
15.
Which best describes a parallel circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from one source. 
c)
Electricity flows along more than one pathway. 
d)
The flow of electricity comes from more than one source. 
16.
In a parallel circuit if one of the light bulbs burns out the rest _________.
a)
stop the flow of electricity
b)
 can still light up
c)
 will go out
d)
of the light bulbs burn out also
17.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
18.

How many volts is produced by three cells of 3 V each in series?

a)

3V

b)

1.5V

c)

9V

d)

27V

19.

A circuit contains two resistors in series. One is 5ohms and the other 10 ohms. What is the total resistance of the circuit?

a)

5 ohms

b)

10 ohms

c)

15 ohms

20.

Which circuit will produce the least resistance?

a)

series circuit

b)

parallel circuit

21.

How many amps is the same as 120mA (milliamps)

a)

120A

b)

12A

c)

0.12A

d)

0.012A

22.

How many ohms is equivalent to 3.2kΩ?

a)

320 Ohms

b)

32 Ohms

c)

3200 Ohms

d)

3.2 Ohms

23.

If the cell above has a potential difference of 8V, what is the potential difference across one bulb? (Light bulbs have the same resistance of 2 Ω)

a)

8V

b)

4V

c)

16V

d)

2V

24.

Look at figure 4. Ammeter A2 and A3 read the same value at 0.4Amps. What is the reading on Ammeter A1?

a)

0.4A

b)

0.2A

c)

0.8A

25.

If the cell in the circuit above has a potential difference of 8V, what is the potential difference across one of the bulbs?

a)

8V

b)

4V

c)

16V

d)

2V

26.

The following image respresents a

a)

LED

b)

Series circuit

c)

Parallel circuit

d)

Resistor

27.

The following image respresents a

a)

LED

b)

Series circuit

c)

Parallel circuit

d)

Resistor

28.

The equivalent resistance of the following circuit is(R1= 20 Ω, R2=50 Ω)...

a)

70 Ω

b)

30 Ω

c)

14.28 Ω

d)

23.4 Ω

29.

The equivalent resistance of the following circuit is...

a)

9.23 Ω

b)

90 Ω

c)

60 Ω

d)

70 Ω

30.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
31.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
32.
____________ stops the flow of electricity.
a)
A conductor
b)
An insulator
c)
A magnet
33.
Two types of circuits are
a)
parallel and magnetic
b)
electromagnetic and series
c)
series and parallel
34.
The unit for current is the 
a)
Volt
b)
Ohm
c)
Electron
d)
Amp
35.
Identify the conductor below.
a)
cloth rag
b)
plastic bottle
c)
gold ring
36.
What is the unit for resistance?
a)
Volts
b)
Amperes
c)
Ohms
37.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps
38.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
39.
What resistance is needed to cause a 20A current flow because of a 100V battery?
a)
0.2Ώ
b)
2000Ώ
c)
120Ώ
d)
5Ώ
40.
What is the power of a 20V bulb with 5A through it?
a)
100W
b)
100V
c)
6.3W
d)
6.3A
41.
What is the current through a 11V bulb with a power of 99W?
a)
9W
b)
9A
c)
60V
d)
60A
42.

What voltage is needed to cause a 50A current flow through a 10Ω resistor?

a)

15V

b)

500V

c)

500 kV

d)

0.2V

43.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps
44.
What would the circuit resistance be if a 7.5 Amp draw was present with the engine running and the charging system producing 15 Volts
a)
15 Ohms
b)
4 Ohms
c)
0.3333 Ohms
d)
2 Ohms
45.

If you increase the size of the resistor and keep the voltage the same, what will happen to the current?

a)

Current will increase

b)

Current will decrease

c)

Current will stay the same

46.

If you increase the voltage across a resistor, what will happen to the current?

a)

Current will increase

b)

Current will decrease

c)

Current will stay the same

47.

If the current in an electrical circuit is constant, what will happen to the voltage if the resistance is increased?

a)

Voltage will increase

b)

Voltage will decrease

c)

Voltage will stay the same

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