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Electricity YR 7 KS 3

Total questions: 54

Worksheet time: 42mins

Name
Class
Date
1.

Which of these circuits will not allow the lightbulb to light up

a)
b)
c)
d)
2.
Which particle has a positive charge?
a)
electron
b)
orbital
c)
proton
d)
neutron
3.
Choose the particle that has no charge.
a)
nucleus
b)
neutron
c)
proton
d)
electron
4.
This particle determines what element you have - the elements identity.
a)
electron
b)
proton
c)
neutron
d)
valence shell
5.
An electron has a _____ charge.
a)
negative
b)
positive
c)
neutral
6.
What is at the center of every atom?
a)
An electron
b)
A compound
c)
A molecule
d)
A nucleus
7.
What number indicates an electron?
a)
1
b)
2
c)
3
d)
4
8.
What number indicates the nucleus?
a)
1
b)
2
c)
3
d)
4
9.

What is a series circuit?

a)

True

b)

false

c)

A path with more than one way for electrons to travel

d)

A path with only one way.

10.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
11.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
12.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
13.
Two batteries in a circuit make the lights in the circuit brighter than one battery.
a)
true
b)
false
14.
If the lights are on, the circuit is
a)
closed
b)
open
15.
Two types of circuits are
a)
parallel and magnetic
b)
electromagnetic and series
c)
series and parallel
16.
What is the major difference between static electricity and current electricity?
a)
Current electricity involves a continuous flow of neutrons; static electricity is a sudden transfer of protons
b)
Current electricity can be deadly; static electricity is almost always safe
c)
In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons
d)
Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons
17.

Resistors make the electrons flow faster.

a)

agree

b)

disagree

18.
The unit for current is the 
a)
Volt
b)
Ohm
c)
Electron
d)
Amp
19.

a unit that measures the flow of a current is called ______

a)

ampere

b)

volt

c)

watt

d)

ohm

20.

a unit that measures the force of a current is called ______

a)

ampere

b)

volt

c)

watt

d)

ohm

21.

In a series circuit...

a)

the current is the same everywhere.

b)

the current is split between components.

c)

the voltage is the same everywhere.

d)

the voltage is split between components.

22.

Ammeters should always be connected in (a)   .

23.

In a series circuit, if one component breaks the others will remain on.

a)

True

b)

False

24.

In a circuit, electrons flow from

a)

negative to positive

b)

positive yo negative

25.

Look at the circuit. Branch 2 is open, which statement is correct?

a)

Only the bulb in branch 2 will not work.

b)

All bulbs in other branches will not work.

c)

The first branch with two bulbs will still work, others will not.

26.

If the current flowing through the cell is 2A, what is the ammeter reading?

a)

5A

b)

1A

c)

6A

d)

2A

27.
a)

zig zag

b)

Resistor

c)

Ammeter

28.

This is the symbol for a...

a)

Fixed Resistor

b)

Variable Resistor

c)

Light Dependent Resistor

d)

Fuse

29.

How many paths does a series circuit have?

a)

4

b)

3

c)

2

d)

1

30.

The voltage stays the same in a series circuit.

a)

True

b)

False

31.

Adding more loads to a parallel circuit will increase the currentt.

a)

True

b)

False.

32.

Which of the circuits in the diagram are series circuits?

a)

A

b)

B

c)

C

d)

D

33.

Which of the circuits in the diagram are parallel circuits?

a)

A

b)

B

c)

C

d)

D

34.

Which of the circuits in the diagram will have lightbulbs that are lit?

a)

A

b)

B

c)

C

d)

D

35.

What type of circuit is shown in the picture?

a)

Series Circuit

b)

Broken Circuit

c)

Parallel Circuit

d)

Open Circuit

36.

Opposite charges

a)

attract

b)

repel

c)

become neutral

d)

do nothing

37.

Mr. Anady rubbed two balloons against his wool sweater for 30 seconds each. What will happen when the balloons are brought near each other?

a)

The balloons will repel each other.

b)

The balloons will attract each other.

c)

The balloons will become positively (+) charged.

d)

The balloons will pop.

38.

The accumulation of excess electric charge on an object is called

a)

Static electricity

b)

Electric discharge

c)

Resistance

d)

Current electricity

39.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
40.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
41.
What is the major difference between static electricity and current electricity?
a)
Current electricity involves a continuous flow of neutrons; static electricity is a sudden transfer of protons
b)
Current electricity can be deadly; static electricity is almost always safe
c)
In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons
d)
Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons
42.

What can happen when you touch a metal doorknob after rubbing your shoes on the carpet?

a)

The doorknob sends a burst of electric current into your body

b)

Millions of electrons go from your finger into the doorknob

c)

Our negatively charged body becomes positively charged

d)

Our finger becomes negatively charged

43.
Which of the following is caused by static electricity?
a)
a stove getting hot when it is turned on
b)
a magnet being attracted to a refrigerator
c)
a lightning strike during a storm
d)
a light bulb coming on when a switch is turned on
44.

If two charges repel each other, the two charges must be?

a)

Positive & Positive

b)

Positive & Neutral

c)

Negative & Negative

d)

Positive and Negative

45.

An object becomes charged when the atoms in the object gain or lose?

a)

Electrons

b)

Protons

c)

Neutrons

d)

All of the above

46.

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

a)

A positive charge.

b)

A negative charge.

c)

A neutral charge.

d)

No charge at all.

47.

An object becomes negatively charged by

a)

losing protons

b)

gaining electrons

c)

losing electrons

d)

gaining protons

48.

An object becomes positively charged by

a)

losing protons

b)

gaining electrons

c)

losing electrons

d)

gaining protons

49.

Electricity flows well through conductors. A good example of a conductor is ___________________.

a)

Rubber

b)

Wool

c)

Metal

d)

Glass

50.

Materials that allow electrical charges to flow easily through them are called __________.

a)

Currents

b)

Insulators

c)

Conductors

d)

Semiconductors

51.

A positively-charged and a negatively-charged object will...

a)

Attract

b)

Repel

c)

Do nothing

52.

The accumulation of excess electric charge on an object is called

a)

Static Electricity

b)

Electric Discharge

c)

Resistance

d)

Current Electricity

53.

If an object has the same number of positive and negative charges, its electrical charge is...

a)

Positive

b)

Negative

c)

Neutral or no charge

d)

Opposite

54.

Static charges build up when

a)

Protons move within an object

b)

The nucleus moves within an object

c)

Neutrons move within an object

d)

Electrons move within an object

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