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Electricity

Total questions: 53

Worksheet time: 40mins

Name
Class
Date
1.
A particle that carries a negative electric charge is called a(n) ______.
a)
neutron
b)
atom
c)
proton
d)
electron
2.
When you charge an electroscope by touching it with a charged balloon, the process is called _____.
a)
friction
b)
conduction
c)
induction
d)
grounding
3.
The potential difference that causes charges to move in a circuit is ___.
a)
voltage
b)
resistance
c)
current
d)
electric discharge
4.
An example of a voltage source is a _____.
a)
voltmeter
b)
battery
c)
resistance
d)
switch
5.
A circuit that is connected to Earth is said to be _____.
a)
series
b)
parallel
c)
grounded
d)
discharged
6.
Your hair might be attracted to your comb as your hair and the combe become oppositely charged.
a)
true
b)
false
7.
A neutral object becomes negatively charged when it loses electrons.
a)
true
b)
false
8.
A circuit breaker contains a thin strip of metal that melts if too much current passes through it.
a)
true
b)
false
9.
Electrical resistance is low in a good conductor.
a)
true
b)
false
10.
What is the unit for resistance?
a)
Volts
b)
Amperes
c)
Ohms
11.
In a _________ circuit, if one bulb goes out then the entire circuit doesn't work.
a)
Series
b)
Parallel
12.
What type of circuit is pictured?
a)
series
b)
parallel
13.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
14.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
15.
What is a closed path for electrons to flow through?
a)
static electricity
b)
circuit
c)
amperes
16.
A circuit made of wires, a lamp, a switch, and a cell is shown at the right. What change is needed for the lamp to glow? 
a)
The switch needs to be opened.
b)
The switch needs to be closed.
c)
The cell needs an insulator.
d)
The wire needs to be connected to the bottom of the cell.
17.
Which statement best explains why the lamp does not glow? 
a)
Circuit 1 is an open circuit.
b)
 Circuit 1 is a closed circuit.
c)
 The negative terminal of Circuit 1 is connected to the cell.
d)
The positive terminal of Circuit 1 is connected to the cell.
18.

Which of these will repel each other?

a)

Negatively charged balloon and positively charged sphere.

b)

Negatively charged balloon and neutral sphere.

c)

Negatively charged balloon and negatively charged sphere.

d)

Negatively charged balloon and neutral wall.

19.

If the light bulb in the middle burned out, what would happen to the other two?

a)

The light bulb to the left would stay lit, but the one to the right would turn off.

b)

They would both stay lit.

c)

The light bulb to the right would stay lit, but the one to the left would turn off.

d)

They would both turn off.

20.
What kind of circuit is this?
a)
series
b)
parallel
21.
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
22.
When socks get stuck to towels in your dryer, this is an example of________________
a)
current electricity
b)
static electricity
23.
The flow of electricity requires a
a)
complete path
b)
incomplete path
c)
insulated current
24.

What are the three properties of an electric circuit?

a)

Current, Voltage, Power

b)

Current, Voltage, Resistance

c)

Power, Voltage, Resistance

d)

Current, Power, Resistance

25.

What is the unit for voltage

a)

Watts

b)

Ohms

c)

Volts

d)

Amperes

26.

Bending water with a charged balloon is an example of what type of charging (charging an object without touching)

a)

friction

b)

induction

c)

conduction

27.

the positively charged particle in an atom, never leaves the nucleus, determines the element

a)

proton

b)

neutron

c)

electron

28.

What is the major difference between static electricity and current electricity?

a)

Current electricity involves a continuous flow of elecrons; 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

29.

the negatively charged particle in an atom, moves freely, can be released, shared, or “stolen” from an atom

a)

proton

b)

neutron

c)

electron

30.

Lightning occurs because ___.

a)

the negative charges at the bottom of clouds are attracted to the positive charges on the ground.

b)

the positive charges at the bottom of clouds are attracted to the negative charges on the ground.

c)

the positive and negative charges inside clouds are attracted to each other

d)

All of these reasons are correct.

31.
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
32.
Static electricity is 
a)
The balance of electrical charge on an object
b)

The unequal balance of electrical charges on an object

c)
The discharge of electrical charge
d)
The build up of protons in the nucleus of an atom 
33.
If two objects with static charge are attracted, what do you know about them?
a)
They are both positively charged.
b)
They are both negatively charged.
c)
One is positively charged and one is negatively charged, but you won't be able to tell which is which.
d)
One is positively charged and one is negatively charged, and you can tell which is which by looking at them.
34.
All wires used in electric circuits should be covered with:
a)
a colored material.
b)
a conducting material.
c)
an insulating material.
d)
none of these.
35.

What is another name for the wires in a circuit?

a)

Conductor

b)

Load

c)

Power Source

36.
True or False:
For an object to have a static charge it must be ferromagnetic.
a)
True
b)
False
c)
Monkey
d)
carrot cake
37.
What type of electricity occurs when you rub a balloon on your sweater?
a)
thermal electricity
b)
current electricity
c)
static electricity
d)
work electricity
38.
Circuit breakers and fuses protect  ___________.
a)
devices from breaking
b)
devices from electricuting you
c)
devices from getting wet
d)
devices from overheating
39.

If the balloon has a negative charge, the hair must have what charge?

a)

negative

b)

positive

c)

neutral

40.

Select all that describe insulators.

a)

allow charges to flow easily

b)

do not allow charges to flow easily

c)

plastic

d)

metal

e)

surround a wire

41.
Flow of electrons that creates a charge, one of the fundamental forms of energy
a)
Electric Charge
b)
Friction
c)
Circuit 
d)
Electricity
42.
A device that uses chemical energy to make electricity
a)
Conductor
b)
Battery
c)
Motor
d)
Generator 
43.

Is the symbol for _____.

a)

Light bulb

b)

Resistor

c)

Battery

d)

Switch

44.

Is the symbol for _____.

a)

Light bulb

b)

Resistor

c)

Battery

d)

Switch

45.

Is the symbol for _____.

a)

Light bulb

b)

Resistor

c)

Battery

d)

Switch

46.

An instrument used to measure electric current is a(n) _____.

a)

Voltmeter

b)

Generator

c)

Ammeter

d)

Transformer

47.

Electric current is measured in a unit called _____.

a)

ampere

b)

ohm

c)

volt

d)

coulomb

48.

Potential difference is measured in a unit called _____.

a)

ampere

b)

ohm

c)

volt

d)

coulomb

49.

An instrument used to measure potential difference is a(n) _____.

a)

Voltmeter

b)

Generator

c)

Ammeter

d)

Transformer

50.
A region around a charged particle that can exert a force on another charged particle is called an
a)
electric pulse.
b)
electric charge.
c)
electric force.
d)
electric field.
51.
If bulb 1 burns out, what will occur?
a)
bulbs 2 and 3 will go out
b)
bulbs 2 and 3 receive more volts
c)
bulbs 2 and 3 will stay lit
d)
nothing will happen
52.

Which diagram correctly shows the electric field around a negative charge?

a)

A

b)

B

c)

they are both positive

53.

Which diagram correctly shows the electric field around a positive charge?

a)

A

b)

B

c)

they are both positive

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