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Worksheets

G9 Review EASE 2

Total questions: 100

Worksheet time: 5hrs 4mins

Name
Class
Date
1.
Current is measured in....
a)
Amps 
b)
Volts
c)
Ohms
d)
Coulombs
2.
The flow/movement of electric charges 
a)
Voltage
b)
Resistance 
c)
Current 
d)
Circuit 
3.

There is a current of 3.0A in a resistor for time t.

During time t, a charge of 120C flows through the resistor.

What is time t ?

a)

0.025 minutes

b)

0.025 s

c)

40 minutes

d)

40 s

4.
How much charge must pass by a point in 10 s for the current to be  0.50 A? 
a)

0.05 C

b)

5.0 C

c)

20 C

d)

2.0 C

5.

A charge of 48 C flows for 6s. What is the current?

a)

8 A

b)

288 A

c)

8 V

d)

288 V

6.

The device used for measuring electric current is known as

a)

Ammeter

b)

Galvanometer

c)

Voltmeter

d)

Potentiometer

7.
How do you calculate voltage?
a)
Current X Resistance
b)
Resistance ÷ Current
c)
Current ÷ Resistance
d)
Measure it with a ruler
8.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
9.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

a)

1/4 A

b)

144 A

c)

4 A

d)

0.4 A

10.

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

a)

1/3 ohms

b)

3 ohms

c)

27 ohms

d)

9 ohms

11.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
12.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
13.
What voltage is needed to cause a 5A current flow through a 2Ω resistor?
a)
10V
b)
2.5V
c)
7V
d)
0.4V
14.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
15.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
16.

What would happen if in a circuit the voltage is increase?

a)

The time would increase

b)

The current would increase

c)

The current would decrease

d)

The current would stay the same

17.

If there is a current of 2A and a resistance of 24 ohms, what voltage will there be?

a)

26 V

b)

48 V

c)

12 V

d)

22 V

18.

An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.

a)

60Ω

b)

120Ω

c)

180Ω

d)

240Ω

19.

What is the energy given off by a 20V bulb which has 10C passing through it?

a)

200J

b)

2J

c)

0.5J

d)

250J

20.

A 12 V battery does 1200 J of work transferring charge. How much charge is transferred?

a)

14400C

b)

100C

c)

0.01C

d)

1212C

21.
Current is measured in....
a)
Amps 
b)
Volts
c)
Ohms
d)
Coulombs
22.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
23.
The flow/movement of electric charges 
a)
Voltage
b)
Resistance 
c)
Current 
d)
Circuit 
24.

There is a current of 3.0A in a resistor for time t.

During time t, a charge of 120C flows through the resistor.

What is time t ?

a)

0.025 minutes

b)

0.025 s

c)

40 minutes

d)

40 s

25.
How much charge must pass by a point in 10 s for the current to be  0.50 A? 
a)

0.05 C

b)

5.0 C

c)

20 C

d)

2.0 C

26.

A charge of 48 C flows for 6s. What is the current?

a)

8 A

b)

288 A

c)

8 V

d)

288 V

27.

Quantity of charge can be measured in

a)

time (s)

b)

Ampere (A)

c)

coulombs (C)

d)

Joule (J)

28.
An example of a conductor is :
a)
a glass paperweight
b)
a plastic cap
c)
a metal screw
d)
a wooden handle
29.
An example of an insulator is:
a)
iron
b)
silver
c)
copper wire
d)
rubber
30.

The device used for measuring electric current is known as

a)

Ammeter

b)

Galvanometer

c)

Voltmeter

d)

Potentiometer

31.
How do you calculate voltage?
a)
Current X Resistance
b)
Resistance ÷ Current
c)
Current ÷ Resistance
d)
Measure it with a ruler
32.
How do you calculate resistance?
a)
Voltage X Current
b)
Current ÷ Voltage
c)
Voltage ÷ Current
d)
Current X Amps
33.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
34.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
35.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
36.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

a)

1/4 A

b)

144 A

c)

4 A

d)

0.4 A

37.

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

a)

1/3 ohms

b)

3 ohms

c)

27 ohms

d)

9 ohms

38.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
39.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
40.
What is voltage measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
41.
What voltage is needed to cause a 5A current flow through a 2Ω resistor?
a)
10V
b)
2.5V
c)
7V
d)
0.4V
42.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
43.
Identify the conductor below.
a)
cloth rag
b)
plastic bottle
c)
gold ring
44.
Identify the insulator below.
a)
aluminum foil
b)
paperclip
c)
rubber eraser
45.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
46.
Electricity is the flow of _________.
a)
protons
b)
neutrons
c)
electrons
47.

What would happen if in a circuit the voltage is increase?

a)

The time would increase

b)

The current would increase

c)

The current would decrease

d)

The current would stay the same

48.

If there is a current of 2A and a resistance of 24 ohms, what voltage will there be?

a)

26 V

b)

48 V

c)

12 V

d)

22 V

49.

If the voltage is increased and the resistance stays the same, what will current do?

a)
Increase
b)
Decrease
c)
Stay the same
d)
X
50.

An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.

a)

60Ω

b)

120Ω

c)

180Ω

d)

240Ω

51.

How must a voltmeter be connected?

a)

In series

b)

In parallel

c)

To a power supply

52.

What is 1 volt equivalent to?

a)

1J/C

b)

1C/J

c)

1A/s

d)

1J/V

53.
What is the rule for voltage in a parallel circuit?
a)
stays the same
b)
adds up
c)
inverse of the sum of the reciprocals
54.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
55.

Which of these is not another name for voltage

a)

Potential Difference

b)

Electromotive Force

c)

Flow of charge

56.

What is the energy given off by a 20V bulb which has 10C passing through it?

a)

200J

b)

2J

c)

0.5J

d)

250J

57.

When lighting happen,25 C charge is transferred from could to the ground and 1.25x1010 J energy is produced. Calculate the potential difference within cloud and the ground in unit Volt

a)

4.00 x 108

b)

2.00 x 108

c)

3.00 x 108

d)

5.00 x 108

58.

Calculate the potential difference if the work done by 10 coulombs of charge is 50 joules

a)

500 V

b)

5 V

c)

0.5 V

59.

What is the correct equation?

a)

potential difference = charge / time taken

b)

potential difference = work done / charge

c)

potential difference = work done / time taken

d)

potential difference = time taken / charge

60.

How much work is done in moving a charge of 3C across two points having a potential difference of 12 V.

a)

4J

b)

38 J

c)

30 J

d)

36 J

61.

On connecting 5 electric cells, the e. m. f. of each one is 2.5volt in parallel the total e. m. f. of the new battery equal..... Volt

a)

2.5

b)

5

c)

7.5

d)

12.5

62.

The batteries in the photo are

a)

connected in series

b)

connected in parallel

c)

open

d)

arranged together

63.

How much work is done to transfer 0.15 C of charge through an electric potential difference of 9.0 V?

 

a)

0.016V

b)

1.35J

c)

60J

d)

1.35V

64.

A 12 V battery does 1200 J of work transferring charge. How much charge is transferred?

a)

14400C

b)

100C

c)

0.01C

d)

1212C

65.

A circuit consists of two 1.5 V cells in series. How much energy does 2 C
of charge gain on going through the cells?

a)

0.75 J

b)

6 J

c)

3 J

d)

0.67 J

66.

A 3.0 Ω resistor and a 6.0 Ω resistor are connected in parallel.What is their combined resistance?

a)

0.50Ω

b)

2.0Ω

c)

4.5Ω

d)

9.0Ω

67.

The circuit diagram shows a 4.0 Ω resistor and an 8.0 Ω resistor connected to a 6.0V battery. What is the current in the battery?

a)

0.50A

b)

0.75A

c)

1.50A

d)

2.00A

68.

The circuit diagram shows a 4.0 Ω resistor and an 8.0 Ω resistor connected to a 6.0V battery.What is the current in the 8.0 Ωresistor?

a)

0 A

b)

0.50A

c)

0.75A

d)

1.0A

69.
In a series circuit which of the following is the same  throughout the circuit
a)
Resistance
b)
Voltage
c)
Current
d)
None of the above
70.
In a series circuit which of the following will vary based on the resistor
a)
Resistance
b)
Voltage
c)
Current
d)
None of the above
71.
A circuit with 3 resistors, 10 Ohms, 30 Ohms and 20 Ohms are in series. What is the total resistance
a)
30 Ohms
b)
50 Ohms
c)
60 Ohms
d)
100 Ohms
72.
3 resistors are connected to a 9 V battery n a series circuit, the first resistor uses 6 V, the second uses 2 V. How much voltage does the third resistor use?
a)
1 V
b)
2 V
c)
3 V
d)
9 V
73.
If you increase the voltage of a circuit, what happens?
a)
Current decreases
b)
Current increases
c)
Electrons disappear
d)
Bulbs get dimmer
74.
If you decrease the resistance of a circuit, what happens?
a)
Current decreases
b)
Current increases
c)
Electrons disappear
d)
Bulbs get dimmer
75.
The total resistance in this circuit is 
a)
100 ohms
b)
450 ohms
c)
400 ohms
d)
30 ohms
76.

What is the effective resistance of this combination?

a)

2 kΩ

b)

1 kΩ

c)

5 kΩ

d)

500 Ω

77.

What is the total resistance in this circuit?

a)

501 Ω

b)

501 kΩ

c)

1.5 kΩ

d)

1500 kΩ

78.

A 9.0 Ω resistor and another 9.0 Ω resistor are connected in parallel. What is their combined resistance?

a)

0.5 Ω

b)

2.0 Ω

c)

4.5 Ω

d)

9.0 Ω

79.

Which one of the following resistors connected in parallel with a 24 Ω would give a total resistance of 8 Ω

a)

16 Ω

b)

12 Ω

c)

8 Ω

d)

6 Ω

80.

What is the equivalent or total resistance (Re) across this circuit?

a)

3 kΩ

b)

10 kΩ

c)

13 kΩ

d)

18 kΩ

81.

Three resistors, with values of 2.0, 4.0 and 8.0 ohms, respectively, are connected in series. What is the overall resistance of this combination?

a)

0.58 ohms

b)

1.1 ohms

c)

7.0 ohms

d)

14.0 ohms

82.

If a circuit has two resistors in series both are 4Ω, what is the total resistance of the circuit?

a)

1Ω

b)

2Ω

c)

4Ω

d)

8Ω

83.

What is the unit of resistance

a)

Ohm

b)

Home

c)

Amp

d)

Camp

84.
If the voltage is increased and the resistance stays the same, current will ____.
a)
Increase
b)
Decrease
c)
Stay the same
d)
Not enough info
85.
If the voltage stays the same and resistance is increased, current will ________. 
a)
Increase
b)
Decrease
c)
Stay the same
d)
Not enough info
86.

A strong electromagnet is used to attract pins.

What happens when the current in the coil is halved?

a)

No pins are attracted.

b)

Some pins are attracted, but not as many.

c)

The same number of pins is attracted.

d)

More pins are attracted.

87.

The diagram shows a flat, rectangular coil placed between the poles of a magnet. THere is a current in the coil that makes it turn in the direction shown in the diagram. Which change would make the coil turn in the opposite direction?

a)

decreasing the current in the coil

b)

increasing the number of turns of the coil

c)

reversing both the direction of the current in the coil and the poles of the magnet

d)

reversing only the direction of the current in the coil

88.
a)

A

b)

B

c)

C

d)

D

89.

Using the right hand rule, B represents the direction of the

a)

current

b)

magnetic field

90.

Using the right hand grip rule, A represents the direction of the

a)

current

b)

magnetic field

91.
What is the direction of the current in the wire?
a)
up
b)
down
c)
left
d)
right
92.
.
a)
A
b)
B
c)
C
d)
D
93.

Two resistors R1 and R2 are connected in series. Resistor R1 has double the resistance of resistor R2. Four possible statements about this circuit are listed below. Which pair of statements is correct?
1. The voltage across R1 is twice that across R2.
2. The voltage across R2 is twice that across R1.
3. The current is the same in both resistors.
4. The current in R1 is twice the current in R2.

a)

1 and 4

b)

2 and 3

c)

1 and 3

d)

2 and 4

94.

Current flows up a wire as shown in the diagram. What will the magnetic field look like?

a)

straight lines from left to right

b)

straight lines from right to left

c)

clockwise circles

d)

anticlockwise circles

95.

Which of the following pairs of changes will both increase the strength of an electric motor?

a)

Reversing the magnetic field and increasing the number of turns on the coil

b)

Increasing the number of turns on the coil and reversing the direction of the current

c)

Reversing the direction of the current and reversing the magnetic field

d)

Using a more powerful magnet and increasing the number of turns on the coil

96.
This is the symbol for 
a)
Variable resistor
b)
Thermistor
c)
Resistor
d)
Fuse
97.
This is the symbol for a ...
a)
Wire
b)
Battery
c)
Buzzer
d)
Fuse
98.

This is the symbol for a...

a)

Light Dependent Resistor

b)

Light Emitting Diode

c)

Thermistor

d)

Cell

99.

This is the symbol for a...

a)

Fuse

b)

Wire

c)

Light Emitting Diode

d)

Heater

100.

This is the symbol for a...

a)

Fixed Resistor

b)

Variable Resistor

c)

Light Dependent Resistor

d)

Fuse

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