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Electricity and Magnetism Review

Total questions: 94

Worksheet time: 48mins

Name
Class
Date
1.

an electric circuit with only one branch

a)

series circuit

b)

parallel circuit

c)

open circuit

d)

closed circuit

2.

contain two or more branches for current to flow

a)

series circuit

b)

parallel circuit

c)

open circuit

d)

closed circuit

3.

an electrical circuit that is not complete

a)

series circuit

b)

parallel circuit

c)

open circuit

d)

closed circuit

4.

a complete electrical circuit through which current can flow when voltage is applied

a)

series circuit

b)

parallel circuit

c)

open circuit

d)

closed circuit

5.

Area around a magnet in which magnetic forces can act

a)

magnetic field

b)

magnets

c)

magnetic pole

6.

an object that attracts certain kinds of metals, such as iron 

a)

magnetic field

b)

magnets

c)

magnetic pole

7.

 the end of a magnet, where magnetic forces are greatest

a)

magnetic field

b)

magnets

c)

magnetic pole

8.

Is the image showing magnets repelling or attracting another magnet?



(a)  

9.

What are the two magnetic poles

(a)  

10.

Which of these substances conducts electricity the best

a)

wood

b)

brick

c)

copper

d)

plastic

11.

What is a switch's function in a circuit?

a)

to make the current hotter or colder

b)

turn on and off the flow of current

c)

the pathway that current flows

d)

to add more power to the circuit

12.

What is a battery?

a)

switch

b)

power source

c)

insulator

13.

Describe a series circuit:

a)

a circuit that has multiple branches

b)

a circuit that has one path

c)

a circuit that dead ends after a light buld

14.

Where is the strongest attraction force of the magnet?

a)

at the poles

b)

in the middle

c)

above the magnet

d)

below the magnet

15.

The force of magnetism is stronger when magnets are ______________.

a)

cold

b)

round

c)

closer together

d)

farther apart

16.

A magnetized iron nail is called a _____ magnet.

a)

permanent

b)

temporary

c)

horseshoe

d)

industrial

17.

A magnetic field is a force field created by

a)

gravity

b)

force

c)

magnets

18.

Energy due to motion

a)

kinetic

b)

potential

19.

When heat is transferred by the movement of liquids or gases

a)

convection

b)

kinetic

c)

radiation

20.

When heat moves from one object to another object through direct touch

a)

potential

b)

conduction

c)

convection

d)

radiation

21.
Which factor does NOT affect the strength of a magnetic field?
a)
Distance from the magnet
b)
Size of the magnet
c)
Color of the magnet
d)
Number of coils in an electromagnet
22.
What happens to the strength of an electric force as the distance between charged objects increases?
a)
It increases
b)
It decreases
c)
It remains constant
d)
It fluctuates randomly
23.
In an electromagnet, how can you increase its strength?
a)
Increase the temperature
b)
Decrease the electric current
c)
Increase the electric current/voltage OR number of loops in wire
d)
Use a thinner wire
24.
Which statement about static electricity is correct?
a)
It only occurs in moving charges
b)
It is not affected by humidity
c)
It can cause objects to attract or repel
d)
It always flows in a continuous current
25.
What determines the direction of a magnetic field around a wire?
a)
The material of the wire
b)
The length of the wire
c)
The direction of the electric current
d)
The thickness of the wire
26.
Which of the following factors can increase the strength of a magnetic field?
a)
Decreasing the number of coils
b)
Increasing the distance from the magnet
c)
Using a stronger magnet
d)
Changing the color of the magnet
27.
What is the result of increasing the number of coils in an electromagnet?
a)
The magnetic field strength decreases
b)
The magnetic field strength increases
c)
The magnetic field becomes unstable
d)
The magnetic field remains unchanged
28.
Which statement accurately describes electric forces?
a)
They always attract objects
b)
They depend on the charge and distance between objects
c)
They are unaffected by the medium between charges
d)
They only occur between charged objects and metals
29.
What is the outcome when two like charges are brought close together?
a)
They attract each other
b)
They repel each other
c)
They neutralize each other
d)
They have no effect on each other
30.
How does the strength of a magnetic field change with the distance from the magnet?
a)
It increases with distance
b)
It decreases with distance
c)
It remains constant regardless of distance
d)
It reverses direction with distance
31.
In a series circuit, how many paths do electrons have to flow through?
a)
None
b)
One
c)
Two
d)
Multiple
32.
What happens to the total resistance in a series circuit when more resistors are added?
a)
It decreases
b)
It remains constant
c)
It increases
d)
It fluctuates
33.
Which of the following is true about parallel circuits?
a)
Electrons have only one path to flow through
b)
Total resistance is the sum of all resistors
c)
If one resistor breaks, all others stop working
d)
Multiple paths are available for current flow
34.
What is a disadvantage of a series circuit?
a)
The circuit uses too much energy
b)
Adding more resistors increases brightness
c)
If one resistor breaks, the entire circuit is interrupted
d)
Current stays the same for the entire circuit
35.
In a parallel circuit, what happens to the current when more devices are added?
a)
It decreases
b)
It remains unchanged
c)
It increases
d)
It stops
36.
Which type of current is found in homes and alternates direction?
a)
DC (Direct Current)
b)
AC (Alternating Current)
c)
Static Current
d)
Thermal Current
37.
What is the relationship between voltage and current in a series circuit according to Ohm's Law?
a)
As voltage increases, current decreases
b)
Voltage does not affect current
c)
As voltage increases, current increases
d)
Voltage is constant
38.
Why are most household circuits wired in parallel?
a)
To decrease the risk of fire
b)
Because it decreases the intensity of devices
c)
So that if one device fails, others continue to work
d)
To increase resistance
39.
What happens to the current in a parallel circuit if one bulb goes out?
a)
The entire circuit stops
b)
The current remains the same for the rest
c)
The current decreases
d)
The current increases
40.
What is the purpose of fuses or circuit breakers in parallel circuits?
a)
To increase current flow
b)
To prevent overheating and fire risks
c)
To decrease voltage
d)
To ensure current flow in one direction
41.
According to Ohm's Law, how is resistance calculated?
a)
Voltage divided by current
b)
Current divided by voltage
c)
Voltage times current
d)
Current plus voltage
42.
If the resistance in a circuit is 10 Ω and the current is 2 A, what is the voltage?
a)
5 A
b)
10 V
c)
20 V
d)
8 V
43.
How does resistance affect current in a circuit according to Ohm's Law?
a)
As resistance increases, current increases
b)
Resistance does not affect current
c)
As resistance increases, current decreases
d)
As resistance decreases, current decreases
44.
In a circuit with a voltage of 12 V and a resistance of 4 Ω , what is the current?
a)
2A
b)
3A
c)
4V
d)
6Ω
45.
If a circuit has a current of 3 A and a resistance of 5 Ω , what is the voltage across the circuit?
a)
8 V
b)
15 V
c)
20 V
d)
25 V
46.

In the circuit diagram, identify the type of circuit shown and determine how the current will flow.

a)

Series circuit; current will not flow due to the switch being open.

b)

Parallel circuit; current will flow only IF there are breaks.

c)

Series circuit; current will flow due to resistance.

d)
Parallel circuit; current will flow regardless of breaks.
47.

What is electricity?

a)

A) A form of energy resulting from the movement of charged particles

b)

B) A type of magnetism

c)

C) A chemical reaction

d)

D) A form of sound

48.

The force of attraction or repulsion between two charged particles is known as (a)   .

Choose from the below words

Electric Force

Magnetic Force

Gravitational Force

Nuclear Force

49.

Opposite charges (positive and negative) attract, while like charges (a)   .

Choose from the below words
repel
attract
neutralize
combine
50.

The buildup of electric charges on the surface of an object is known as (a)   .

Choose from the below words

Static Electricity

Electric Current

Electromagnetism

Nuclear Reaction

51.

Adding more batteries increases current and strengthens the (a)   field of an electromagnet.

Choose from the below words
magnetic
electric
gravitational
nuclear
52.

An electric circuit is a (a)   pathway through which electric current flows.

Choose from the below words

Open

Closed

Broken

53.

Which of the following is a component of electric circuits?

a)

Battery

b)

Magnet

c)

Plastic

d)

Wood

54.

What happens to the current in a parallel circuit if one branch/section of the circuit fails?

a)

The whole circuit stops working

b)

The rest still work

c)

The voltage increases

d)

The current doubles

55.

Adding batteries in parallel keeps the voltage the same but increases (a)   .

Choose from the below words

Voltage

Current

Resistance

Power

56.

Electricity is a form of energy resulting from the movement or presence of (a)   .

Choose from the below words
charged particles
magnetic field
light waves
sound waves
57.

Static electricity is the buildup of electric charges on the (a)   of an object.

Choose from the below words

Surface

Core

Center

Edge

58.

A circuit is a (a)   through which electric current flows.

Choose from the below words
Pathway.
Conductor.
Insulator.
Switch.
59.

In a parallel circuit, components are connected across (a)   , forming multiple paths for current.

Choose from the below words
the same voltage
different resistances
the same current
different voltages
60.
What is an electrical circuit?
a)
lets you turn the energy on and off
b)
a closed path where where electricity flows
c)
stop electricity from flowing through
61.

Electric charges that are different (a)   each other.

Choose from the below words
Attract
Repel
62.

A small device that stores energy in a chemical form

a)

Complete circuit

b)

Switch

c)

Resistor

d)

Battery

63.
Series circuit
a)
A material that allows electricity to go through it
b)

Only one pathway for the electricity to flow that has the same current flowing through each device.

c)
A device which provides energy for a circuit
d)

More than one path for the electricity to flow that has the same voltage flowing through each device.

64.

Resistance is measured in a unit called _____.

a)

amperes

b)

ohms

c)

volts

d)

watts

65.

Which device measures the amount of current in an electrical circuit?

a)

Voltmeter

b)

Ammeter

c)

Ohmmeter

d)

Thermometer

66.

What is resistance?

a)

the amount of push the electrical source supplies to the circuit

b)

how much a given device restricts the flow of electric current

c)

flow of electric charge

d)

none of the above

67.

The flow of electrons is also called..

a)

Resistance

b)

Voltage

c)

Current

d)

Magnetism

68.

Allows electrons to flow easily from one place to another.

a)

Resistor

b)

Conductor

c)

Insulator

d)

Plastics

69.

Current that flows in 1 direction and is usually produced by batteries.

a)

AC

b)

DC

c)

Magnetism

d)

CC

70.

Current that flows in two directions and produced by powerplants.

a)

AC

b)

DC

c)

CC

d)

EC

71.

Which circuit below would be described as "closed"?

a)
b)
c)
72.

The push of electrons or energy from the battery is also called?

a)

Voltage

b)

Potential Difference

c)

Resistance

d)

Current

73.

If you INCREASE VOLTAGE, what happens to CURRENT?

a)

it increases

b)

it decreases

c)

it stays the same

74.

A 3 volt battery is switch out and replaced with a 6 volt battery. What happens to the resulting current?

a)

It halves

b)

It doubles

c)

It stays the same

d)

It triples

75.

The friction created by objects in a circuit that resist the flow of electrons/energy.

a)

Resistance

b)

Current

c)

Voltage

d)

Magnetism

76.

If you INCREASE RESISTANCE, what happens to CURRENT?

a)

It decreases

b)

It increases

c)

It stays the same

77.

A circuit is supplied with 9 volts of potential difference from the battery. What happens to the voltage if the resistance in the circuit is increased?

a)

It stays the same

b)

It decreases

c)

It increases

78.

A 4 ohm resistor is replaced with a 2 ohm resistor. What happens to the current in the circuit?

a)

It halves

b)

It triples

c)

It doubles

d)

It quadruples

79.

Which picture below shows a parallel circuit?

a)
b)
c)
d)
80.

In which circuit below, will all lights go out when one light is broken?

a)
b)
c)
81.

The flow of electrons is also called..

a)

Resistance

b)

Voltage

c)

Current

d)

Magnetism

82.

Allows electrons to flow easily from one place to another.

a)

Resistor

b)

Conductor

c)

Insulator

d)

Plastics

83.

Current that flows in 1 direction and is usually produced by batteries.

a)

AC

b)

DC

c)

Magnetism

d)

CC

84.

Current that flows in two directions and produced by powerplants.

a)

AC

b)

DC

c)

CC

d)

EC

85.

Which circuit below would be described as "closed"?

a)
b)
c)
86.

The push of electrons or energy from the battery is also called?

a)

Voltage

b)

Potential Difference

c)

Resistance

d)

Current

87.

If you INCREASE VOLTAGE, what happens to CURRENT?

a)

it increases

b)

it decreases

c)

it stays the same

88.

A 3 volt battery is switch out and replaced with a 6 volt battery. What happens to the resulting current?

a)

It halves

b)

It doubles

c)

It stays the same

d)

It triples

89.

The friction created by objects in a circuit that resist the flow of electrons/energy.

a)

Resistance

b)

Current

c)

Voltage

d)

Magnetism

90.

If you INCREASE RESISTANCE, what happens to CURRENT?

a)

It decreases

b)

It increases

c)

It stays the same

91.

A circuit is supplied with 9 volts of potential difference from the battery. What happens to the voltage if the resistance in the circuit is increased?

a)

It stays the same

b)

It decreases

c)

It increases

92.

A 4 ohm resistor is replaced with a 2 ohm resistor. What happens to the current in the circuit?

a)

It halves

b)

It triples

c)

It doubles

d)

It quadruples

93.

Which picture below shows a parallel circuit?

a)
b)
c)
d)
94.

In which circuit below, will all lights go out when one light is broken?

a)
b)
c)

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