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Electricity

Total questions: 64

Worksheet time: 34mins

Name
Class
Date
1.

A material that does not allow electricity to flow through it

a)

Conductor

b)

Insulator

c)

Resistor

2.

A material that allows electricity to flow through it easily

a)

conductor

b)

insulator

c)

resistor

3.

An electric current is made up of _____ charged electrons

a)

neutral

b)

positive

c)

negative

d)

balanced

4.

Batteries and power plants are examples of ______________.

a)

energy conduction

b)

energy source

c)

energy transformation

d)

energy discharge

5.

Metals such as copper and aluminum are good ______________.

a)

insulators

b)

circuits

c)

conductors

d)

charges

6.

A circuit with only one path for the current to flow is a __________________.

a)

parallel circuit

b)

device

c)

series circuit

d)

mini circuit

7.

Circuits often include a _____________ to control the flow of current.

a)

switch

b)

voltage

c)

conductor

d)

current

8.

This symbol represents a

a)

electric cell (battery)

b)

wire

c)

bulb

d)

power station

9.

If a positive terminal of one cell is connected to the negative terminal of the next cell it is known as

a)

electric current

b)

element

c)

battery

d)

fuse

10.

This symbol stands for

a)

resistor

b)

Rehostat

c)

cell

d)

buzzer

11.

Tasha made this model. In her model the bulb is not lit.


Which of these statements best explains why the bulb is not lit?

a)

The wires are connected to the wrong battery terminals.

b)

The bulb is burned out.

c)

The switch is open.

d)

A wire is missing.

12.

Alicia turned on a light switch. What does turning a switch on do?

a)

open a circuit, allowing electricity to flow

b)

close a circuit, allowing electricity to flow

c)

open a circuit, stopping electricity from flowing

d)

Close a circuit, stopping electricity from flowing

13.

Electric current is defined as

a)

detect electric current

b)

negative terminal to positive terminal

c)

positive terminal to negative terminal

d)

the flow rate of electric charges through a conductor

14.

Electrons flows from

a)

detect electric current

b)

negative terminal to positive terminal

c)

positive terminal to negative terminal

d)

the flow rate of electric charges through a conductor

15.
What is voltage measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
16.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
17.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
18.
How do you calculate voltage?
a)
Current X Resistance
b)
Resistance ÷ Current
c)
Current ÷ Resistance
d)
Measure it with a ruler
19.
How do you calculate current
a)
Resistance X Voltage
b)
Voltage X Resistance
c)
Resistance ÷ Voltage
d)
Voltage ÷ Resistance
20.
How do you calculate resistance?
a)
Voltage X Current
b)
Current ÷ Voltage
c)
Voltage ÷ Current
d)
Current X Amps
21.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
22.
What voltage is needed to cause a 5A current flow through a 2Ω resistor?
a)
10V
b)
2.5V
c)
7V
d)
0.4V
23.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
24.
What resistance is needed to cause a 20A current flow because of a 100V battery?
a)
0.2Ώ
b)
2000Ώ
c)
120Ώ
d)
5Ώ
25.

How are ammeter and voltmeter connected in a circuit?

a)

Ammeter : Series

Voltmeter: Parallel

b)

Ammeter : Parallel

Voltmeter: Parallel

c)

Ammeter : Series

Voltmeter: Series

d)

Ammeter : Parallel

Voltmeter: Series

26.

What physical quantity does voltmeter measures?

a)

Power

b)

Voltage

c)

Current

d)

Resistance

27.

What physical quantity does ammeter measures?

a)

Voltage

b)

Current

c)

Resistance

d)

Power

28.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
29.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
30.
what kind of circuit is this?
a)
parallel
b)
series
c)
chris barton
d)
open
31.
This circuit has more than one loop. When one light goes out, the others stay on. 
a)
closed circuit
b)
series circuit
c)
parallel circuit
d)
open circuit
32.

The buildup of electrical charges is called ______________________.

a)

neutral

b)

discharge

c)

open circuit

d)

static electricity

33.

______________________ is the fast movement of a charge.

a)

Neutral

b)

Discharge

c)

Circuit

d)

Electricity

34.

Like charges ______________.

a)

repel

b)

discharge

c)

attract

d)

don't attract or repel

35.

Opposite charges ______________.

a)

attract

b)

contract

c)

repel

d)

neither attract or repel

36.

A type of static electricity that occurs in storms is _________________________.

a)

clouds

b)

rain

c)

thunder

d)

lightning

37.

Matter is made up of tiny particles called ______________.

a)

atoms

b)

pieces

c)

repels

d)

negatives

38.

The three subatomic particles are

a)

proton, neutron, electron

b)

proton, nucleus, electron

c)

protein, neutron, electricity

d)

proton, neutral, electives

39.

Electrons are

a)

negative

b)

positive

c)

neutral

40.

Protons are

a)

negative

b)

positive

c)

neutral

41.

Neutrons are

a)

negative

b)

positive

c)

neutral

42.

What is the nucleus of an atom made of?

a)

Protons & neutrons

b)

Electrons

c)

Protons & electrons

d)

Electrons & neutrons

43.

Which particle has almost no mass?

a)

Protons

b)

Neutrons

c)

Electrons

44.

Magnetic Field lines

a)

go out from south pole

b)

go out from north pole

c)

come in to the north pole

d)

come in to the south pole

45.
When two magnets attract, they ______________
a)
push apart
b)
change color
c)
get colder
d)
pull together
46.
When two magnets repel, they ________________
a)
change color
b)
pull together
c)
push apart
d)
get colder
47.

What will happen when these magnets are brought close together?

a)

They will attract each other.

b)

They will repel each other.

c)

They will stay the same.

48.

What will happen when these magnets are brought near each other?

a)

They will repel each other.

b)

They will attract each other.

c)

They will stay at the same position.

49.

Which of the following materials will be attached to a magnet?

a)

Gold

b)

Silver

c)

Copper

d)

Iron

50.

What must happen for an electromagnet to have a magnetic field?

a)

  A. It must be heated.

b)

B. It has to be touching another magnet.

c)

C. It must be lined up with Earth’s magnetic field.

d)

D. It must be connected to an electrical source.

51.

What is our best evidence that Earth has a magnetic field?

a)

     A. All things fall toward Earth’s center.

b)

B. A compass needle lines up with it.

c)

C. Winds blow from east to west.

d)

D. Earth’s oceans all have currents. 

52.

The drawing shows an electromagnet. The strength of an electromagnet can be changed

How can we increase the strength of the electromagnet? Choose 3 answers.

a)

Increase the current flowing through the wires.

b)

Add more coils

c)

Spread the coils out more

d)

Use a wooden core

e)

Use an iron core

53.

Which diagram shows the shape of the magnetic field of a bar magnet

a)

A

b)

B

c)

C

d)

D

54.
If I add more light bulbs to a series circuit what happens?
a)
The current speeds up and the lights get brighter
b)
The current slows down and the lights dim lower
c)
The current speeds up and the lights dim lower
d)
The current slows down and the lights get brighter
55.
What slows down the flow of electricity in a circuit?
a)
resistance
b)
voltage
c)
current
d)
source of electric current
56.
Which one will still function if one light bulb goes out?
a)
A-Series
b)
B-Parallel
c)
A-Parallel
d)
B-Seriese
57.

In a closed circuit, how does battery voltage affect current?

a)

As voltage increases, current increases.

b)

As voltage increases, current decreases.

c)

Voltage has no affect on current.

d)

If voltage exceeds current, a short circuit circuit will develop.

58.
Which of the following can work as an energy source?
a)
Battery
b)
Light bulb
c)
Wire
d)
All of them
59.
What will happen if one light bulb is removed from this circuit?
a)
The other bulbs will go out.
b)
The other bulbs will stay on
c)
The other bulbs will get dimmer.
d)
The battery will become stronger.
60.

How many light bulbs would be ON with this complete circuit?

a)

1

b)

3

c)

2

d)

4

61.

How many light bulbs would be ON if the wire of this circuit was cut where the scissors are?

a)

1

b)

3

c)

2

d)

0

62.

How many light bulbs would be ON if the wire of this circuit was cut where the scissors are?

a)

1

b)

3

c)

2

d)

0

63.
Pick the correct sentence.
a)
This circuit will work because it is a closed circuit.
b)
Energy will freely flow in this circuit.
c)
This circuit will not work because there is no energy source.
d)
This circuit will not work because there is no switch.
64.

Will the bulbs light?

a)

Yes

b)

No

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