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Electricity and Magnetism

Total questions: 50

Worksheet time: 24mins

Name
Class
Date
1.
Magnetism created by an electric current
a)
electricity
b)
electromagnetism
c)
wind energy
2.
____________ allows electricity to flow.
a)
A conductor
b)
An insulator
c)
A magnet
3.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
4.
The plastic around the wire is
a)
conductor
b)
insulator
c)
decoration
5.

Irene bought a new house and has decided to rewire it. She wants to be able to turn

some lights off and have the others remain lit. What type of circuits should she use and

why?

a)

She should use parallel circuits because when one light turns off, the other lights remain lit.

b)

She should use series circuits because when one light turns off, the other lights remain lit.

c)

She should use parallel circuits because when one light turns off, the others turn off, too.

d)

She should use series circuits because when one light turns off, the others turn off, too.

6.

Which of the following is an example of a resistor?

a)

battery

b)

light bulb

c)

wire

d)

switch

7.

Which of the following is a simple parallel circuit?

a)
b)
c)
d)
8.

Which of the following is a series circuit?

a)
b)
c)
d)
9.
Does this represent attraction or repulsion?
a)
attraction
b)
repulstion
10.
Does this show attraction or repulsion? 
a)
attract
b)
repel
11.
Name the following symbol used in the drawing of a circuit. 
a)
battery
b)
switch
c)
motor
d)
light bulb
12.
This is an example of...
a)
crazy hair
b)
static electricity
c)
lightning
d)
insulator
13.
An electric current can move along more than one path in a.....
a)
Series circuit
b)
Parallel circuit
14.
A balloon is rubbed all over with wool.  The balloon will now attract wool because the balloon and wool
a)
are magnets
b)
have opposite charges
c)
have like charges
d)
have neutral charges
15.
In a static discharge, which particles move from one object to another?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
16.
What is voltage?
a)
a measure of electric current
b)
a kind of static elecricity
c)
a kind of current electricity
d)
a measure of potential energy difference
17.
Electric current flowing through a wire produces
a)
static electricity
b)
an open circuit
c)
a permanent magnet
d)
a magnetic field
18.
A scientist observed that the needle of a compass moved when it was placed near a wire carrying an electric current.  What did this observation show?
a)
Opposite charges attract.
b)
Electric current generates a magnetic field.
c)
Magnetized wires generate electricity.
d)
Like charges repel.
19.
A string of lights is lit.  They are part of a series circuit.  One of the bulbs is removed.  The rest of the lights will
a)
go out
b)
stay lit
c)
get brighter
d)
get dimmer
20.
What energy transformation takes place in a battery powered fan that is spinning?
a)
kinetic to chemical to electrical
b)
chemical to kinetic
c)
chemical to electrical to kinetic
d)
electrical to kinetic to chemical
21.

If two balloons have the same charge the balloons will...

a)

repel

b)

attract

c)

stay neutral

22.

An object with equal amounts of positive and negative charge is electrically....

a)

neutral

b)

charged

c)

positive

d)

negative

23.

An object that has gained electrons is....

a)

electrically neutral

b)

negatively charged

c)

positively charged

24.
A continuous flow of electricity is called_____________
a)
series
b)
circuit
c)
static
d)
current
25.
What is this?
a)
magnet
b)
electromagnet
c)
series circuit
d)
parallel circuit
26.
How do you make an electromagnet stronger?
a)
Add a motor and/or lightbulbs
b)
Add more light bulbs and/or wire coils
c)
add more wire coils and/or a switch
d)
add more wire coils and/or batteries
27.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
28.
The buildup of charges on an object
a)
conductor
b)
static electricity
c)
electric field
d)
series circuit
29.
The measure of how much a material opposes the flow of current 
a)
insulator 
b)
conductor
c)
reisitance
d)
parallel circuit 
30.

protons have this type of charge

a)

positive

b)

negative

c)

neutral

31.

electrons have this type of charge

a)

positive

b)

negative

c)

neutral

32.
If you wrap more coils around an electromagnet, it will become 
a)
brighter
b)
stronger
c)
weaker
d)
invisible
33.

When running a current through a wire, what do the blue lines represent?

a)

The wire spinning

b)

A magnetic field that was created

c)

Electrons leaving

d)

Electricity

34.

What is used to measure electric current?

a)

Voltmeter

b)

Ammeter

c)

Wattmeter

d)

pH meter

35.

If the current in an electrical circuit is constant, what will happen to the voltage if the resistance is increased?

a)

Voltage will increase

b)

Voltage will decrease

c)

Voltage will stay the same

36.

If you increase the voltage across a resistor, what will happen to the current?

a)

Current will increase

b)

Current will decrease

c)

Current will stay the same

37.

If you increase the size of the resistor and keep the voltage the same, what will happen to the current?

a)

Current will increase

b)

Current will decrease

c)

Current will stay the same

38.

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

39.

Electric current 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

40.

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

41.

Galvanometer is used to

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

42.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
43.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
44.
How do you calculate voltage?
a)
Current X Resistance
b)
Resistance ÷ Current
c)
Current ÷ Resistance
d)
Measure it with a ruler
45.
How do you calculate current
a)
Resistance X Voltage
b)
Voltage X Resistance
c)
Resistance ÷ Voltage
d)
Voltage ÷ Resistance
46.
How do you calculate resistance?
a)
Voltage X Current
b)
Current ÷ Voltage
c)
Voltage ÷ Current
d)
Current X Amps
47.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
48.
What voltage is needed to cause a 5A current flow through a 2Ω resistor?
a)
10V
b)
2.5V
c)
7V
d)
0.4V
49.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
50.
What resistance is needed to cause a 20A current flow because of a 100V battery?
a)
0.2Ώ
b)
2000Ώ
c)
120Ώ
d)
5Ώ

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