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Voltage and Current

Total questions: 89

Worksheet time: 16hrs 27mins

Name
Class
Date
1.
Current is measured in....
a)
Amps 
b)
Volts
c)
Ohms
d)
Coulombs
2.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
3.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
4.

In a parallel circuit if one of the light bulbs breaks the rest _________.

a)

of the light bulbs break also

b)

can still light up

c)

will go out

5.
How should you put in an Ammeter?
a)
In Parallel
b)
In Series
6.
In which of these two circuits is the current the same at all points? 
a)
A
b)
B
7.
Does this diagram represent a series or parallel circuit?
a)
series circuit
b)
parallel circuit
8.
Does this diagram represent a series or parallel circuit?
a)
series circuit
b)
parallel circuit
9.

The current in a wire is 1.2kA. What is the current in Amps?

a)

120A

b)

12A

c)

0.12A

d)

1200A

10.

Current is...

a)

A measure of the difference in energy

b)

How difficult it is for electrons to flow

c)

The rate of flow of charge

d)

The temperature of the wire

11.

What is wrong with this circuit diagram?

a)

There is only one cell

b)

The ammeter should be connected in series

c)

A ammeter should be connected in parallel

12.

Which ammeter will have the biggest reading?

a)

Ammeter 1

b)

Ammeter 2

c)

They will be the same

13.

What will the current be for ammeter 1?

a)

Less than 10A

b)

More than 10A

c)

10A

14.

What is the current for ammeter 2?

a)

10A

b)

5A

c)

15A

15.

What will happen if bulb B is removed?

a)

Bulbs A and C will dim

b)

The circuit will be over

c)

All of the bulbs will go out

d)

The other bulbs will remain lit

16.

What is the current on the other ammeter?

a)

0.15A

b)

0.15a

c)

0.3A

d)

0.3a

e)

0.075A

17.

This is a series circuit. What value will be shown on the other ammeter?

a)

0.3A

b)

0.3a

c)

0.15A

d)

0.6A

e)

0.6a

18.

What is the current?

a)

0.3A

b)

0.15A

c)

0.6A

d)

0.15a

e)

0.3a

19.
What is the current reading at the two question marks in the diagram?
a)
12 A
b)
8 A
c)
4 A
d)
1 A
20.
Assuming the lamps are identical, what is the current running though each lamp?
a)
3 A
b)
2 A
c)
1 A
d)
0 A
21.
What would the current reading be on the ammeter returning to the cell?
a)
1 A
b)
2 A
c)
3 A
d)
6 A
22.
Current is the flow (movement) of electrons around the circuit.
a)
True
b)
False
23.
In a series circuit, the current is the same everywhere, it does not change
a)
True
b)
False
24.
A series circuit has two bulbs, an ammeter is placed before the battery and reads 6 amps. What would the reading be after the bulb?
a)
6 amps
b)
3 amps
25.

If a wire has 50 amps of current running through it, how many coulombs of charge would you expect to pass through it in 5 seconds?

a)

10

b)

45

c)

250

d)

0.1

26.

If 300 coulombs of charge pass through a wire in 10 seconds, what amperage would the current have?

a)

310

b)

3000

c)

0.03

d)

30

27.

If a wire has 28 amps of current running through it how many seconds would it take for 84 coulombs of charge to pass through it?

a)

3

b)

56

c)

2352

d)

112

28.

If you were to measure 1224 coulombs of charge pass through a wire in 12 seconds, what would the amperage of the current be?

a)

1236

b)

14688

c)

102

d)

0.01

29.

Is there are 44 amps of current, and it runs through a wire for 11 seconds, how many coulombs of charge will pass through the wire?

a)

4

b)

0.24

c)

484

d)

33

30.

If there are 15 amps running through a wire and you measure 2,700 coulombs running through it, how many MINUTES would

a)

180

b)

3

c)

5

d)

40,500

31.
Current is measured in what unit?
a)
ohms
b)
volts
c)
watts
d)
amps
32.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
33.
The flow/movement of electric charges 
a)
Voltage
b)
Resistance 
c)
Current 
d)
Circuit 
34.

A current of 0.5 A flows in a circuit. Calculate the charge flowing through the circuit in one minute.

a)

0.5 C

b)

30 C

c)

120 C

35.
What is the symbol for Current
a)
C
b)
Q
c)
I
d)
A
36.
What is the unit for Charge
a)
C
b)
Q
c)
I
d)
A
37.
What is the symbol for Charge
a)
C
b)
Q
c)
I
d)
A
38.
What is a formula to calculate Charge
a)
Q=I*t
b)
Q=I/t
c)
Q = V*E
d)
Q = V/E
39.
What is a formula to calculate Current
a)
I=Q/t
b)
I=Q*t
c)
I =V*R
d)
I = R/V
40.
How much charge must pass by a point in 10 s for the current to be  0.50 A? 
a)
0,05C
b)
5,0C
c)
20C
d)
2,0C
41.

What is the current on the other ammeter?

a)

0.15A

b)

0.15a

c)

0.3A

d)

0.3a

e)

0.075A

42.

This is a series circuit. What value will be shown on the other ammeter?

a)

0.3A

b)

0.3a

c)

0.15A

d)

0.6A

e)

0.6a

43.

What is the current?

a)

0.3A

b)

0.15A

c)

0.6A

d)

0.15a

e)

0.3a

44.

What is the voltage of the 2 cells?

a)

3V

b)

1.5V

c)

6V

d)

3v

e)

1.5v

45.

What is the potential difference over the second bulb?

a)

4.5V

b)

9V

c)

1V

d)

3V

e)

0V

46.

The cell provides a voltage of 1.5V to this parallel circuit. If the bulbs both have the same resistance, what will be correct voltage for each of the bulbs? (2 marks)

a)

middle bulb = 1.5V

b)

middle bulb = 3V

c)

bottom bulb = 3V

d)

bottom bulb = 1.5V

e)

both bulbs have a voltage of 0.75V

47.

What is the voltage shown on V1?

a)

3V

b)

1.5V

c)

6V

d)

0.75V

e)

1V

48.

What is the voltage shown on V2?

a)

3V

b)

1.5V

c)

6V

d)

0.75V

e)

1V

49.

What is the current shown on A1?

a)

0.2V

b)

0.2A

c)

0.4A

d)

0.1A

e)

3V

50.

What is the current shown on A2?

a)

0.2V

b)

0.2A

c)

0.4A

d)

0.1A

e)

3V

51.
Voltage is measured in __.
a)
volts.
b)
watts.
c)
coulombs. 
52.

If a wire has 50 amps of current running through it, how many coulombs of charge would you expect to pass through it in 5 seconds?

a)

10

b)

45

c)

250

d)

0.1

53.

If 300 coulombs of charge pass through a wire in 10 seconds, what amperage would the current have?

a)

310

b)

3000

c)

0.03

d)

30

54.

If a wire has 28 amps of current running through it how many seconds would it take for 84 coulombs of charge to pass through it?

Q = I x t

(you must rearrange this equation)

a)

3

b)

56

c)

2352

d)

112

55.

Is there are 44 amps of current, and it runs through a wire for 11 seconds, how many coulombs of charge will pass through the wire?

Q = I x t

a)

4

b)

0.24

c)

484

d)

33

56.
Current is measured in what unit?
a)
ohms
b)
volts
c)
watts
d)
amps
57.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
58.
The flow/movement of electric charges 
a)
Voltage
b)
Resistance 
c)
Current 
d)
Circuit 
59.

A current of 0.5 A flows in a circuit. Calculate the charge flowing through the circuit in one minute.

a)

0.5 C

b)

30 C

c)

120 C

60.
What is the symbol for Current
a)
C
b)
Q
c)
I
d)
A
61.
What is the unit for Charge
a)
C
b)
Q
c)
I
d)
A
62.
What is the symbol for Charge
a)
C
b)
Q
c)
I
d)
A
63.
What is a formula to calculate Charge
a)
Q=I*t
b)
Q=I/t
c)
Q = V*E
d)
Q = V/E
64.
What is a formula to calculate Current
a)
I=Q/t
b)
I=Q*t
c)
I =V*R
d)
I = R/V
65.
How much charge must pass by a point in 10 s for the current to be  0.50 A? 
a)
0,05C
b)
5,0C
c)
20C
d)
2,0C
66.
Current is the flow (movement) of electrons around the circuit.
a)
True
b)
False
67.
Voltage doesnt flow because it is energy
a)
True
b)
False
68.
In a series circuit, the current is the same everywhere, it does not change
a)
True
b)
False
69.
In a series circuit, the voltage across the battery shares between each bulb
a)
True
b)
False
70.
A series circuit has two bulbs, an ammeter is placed before the battery and reads 6 amps. What would the reading be after the bulb?
a)
6 amps
b)
3 amps
71.
A 12 volt battery supplies voltage to two bulbs. How much voltage would each bulb get?
a)
6 volts
b)
12 volts
72.
A 20 volt battery supplies voltage to two bulbs. How much voltage would each bulb get?
a)
20 volts
b)
10 volts
73.
A 15 volt battery supplies voltage to 3 bulbs. How much voltage would each bulb get?
a)
15 volts
b)
5 volts
74.
A 6 volt battery supplies voltage to 3 bulbs. How much voltage would each bulb get?
a)
6 volts
b)
2 volts
75.
A 8 volt battery supplies voltage to 4 bulbs. How much voltage would each bulb get?
a)
8 volts
b)
2 volts
76.
Voltage is measured in __.
a)
volts.
b)
watts.
c)
coulombs. 
77.
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. 
78.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
79.
What kind of circuit is this?
a)
series
b)
parallel
80.

Electrons exist throughout the wire even when current is not flowing.

a)

true

b)

false

c)

not sure

81.

Current is...

a)

...measured in volts with an voltmeter

b)

...measured in volts with an ammeter

c)

...measured in Amps with an voltmeter

d)

...measured in Amps with an ammeter

82.

Which answer best describes the voltage of a battery?

a)

how long it will last for

b)

how strongly it can push the current

c)

how fast the current will be

d)

how large the battery is

83.

What is the ammeter measuring?

a)

the size of the current flowing through the bulb

b)

the brightness of the bulb

c)

the voltage of the battery

d)

the size of the current that the bulb uses up

84.

Which is the correct description of how current flows in a circuit?

a)
b)
c)
d)
85.

A very long circuit is set up that goes around the whole science lab.

What happens when the switch is turned on and why?

a)

the bulb turns on after a second as the current takes time to reach the bulb

b)

the bulb turns on after a split second as the current travels quickly to the bulb

c)

the bulb turns on instantaneously as the electrons all start moving at the same time

d)

I'm not really sure

86.

A motor is added to this circuit.


What happens and why?

a)

Both ammeter readings stay the same because the batteries are pushing just as hard.

b)

Both ammeter readings go down together because the motor slows down the current everywhere in the circuit by the same amount.

c)

Both ammeter readings go down but ammeter 1 is still higher than ammeter 2 because the motor uses up some current, the bulb uses up a bit too.

d)

Ammeter 1 goes down more because the motor slows down the current more on the left.

87.

Which bulb will be the brightest and why?

a)

A because it is designed for torches

b)

B because it has the most electricity in it

c)

C because it has the largest voltage so it pushes the biggest current

d)

they are all the same because the bulbs are the same

88.

A circuit consists of 2 batteries and a bulb.

The bulb is lit very brightly.


What will happen to the brightness of the bulb and why?

a)

the bulb gets brighter because there is less resistance

b)

the bulb gets dimmer because there is a lower voltage, so it pushes a smaller current round

c)

the bulb gets dimmer because there is less energy than before

89.

A 3V battery is added to a circuit with a 1.5V as shown in the diagram.


What happens to the bulb?

a)

it is lit brighter than before as the voltage is now 4.5V

b)

it is not lit because the bulb is connected to both positive terminals

c)

it is the same as before because the batteries cancel out and the new voltage is 1.5V

d)

it is not lit because current cannot go the wrong way through a battery

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