WorksheetsElectricity and Magnetism Test
Total questions: 20
Worksheet time: 10mins
If two charges repel each other, the two charges must be
Positive and positive
Positive and negative
Neutral and negative
Neutral and positive
An object becomes charged when the atoms in the object gain or lose
Protons
Neutrons
Electrons
All of the above
Which of the following is NOT an insulator?
Air
Water
Glass
Wood
A region around a charged particle that can exert a force on another charged particle is called an
Electric field
Electric force
Electric charge
Electric pulse
A material through which charges can move easily is called a(n)
Conductor
Insulator
Inductor
Reductor
The build up of charges on an object is called
An electric force
An electric field
Static electricity
An electric charge
A continuous flow of electric charges through a material is
An electric current
An electric charge
Voltage
Resistance
A complete, unbroken path through which electric charges can flow is called
An electric current
An electric charge
Voltage
Resistance
In a _______, there is only one path for the current to take.
electric charge
electric current
series circuit
parallel circuit
In a _______, there are several paths for the current to take.
electric charge
electric current
series circuit
parallel circuit
What did the dissected speaker contain at its very center?
A magnet
A battery
A small motor
A light bulb
What is the function of the membrane in a speaker?
To change colors
To connect wires
To vibrate and produce sound
To provide support
Why is a coil of wire placed inside a speaker?
To make the speaker heavier
To create a magnetic field
To connect to a power source
To add decoration
How do you know if energy has been transferred to an object?
The object becomes lighter
The object gets bigger
The object changes color
The object moves
How can you test if the coil of wire acts as a magnet?
Heat the coil
Connect it to a battery and bring it near a magnet.
Wrap it in paper
Dip it in water
What was the composition of the metal objects you investigated, that you found were magnetic?
Silicon, iron, tin and lead
Steel, bronze, brass and iron
Iron, Nickel and cobalt
Silver, gold, copper and zinc
Why does the coil become a magnet when connected to a battery?
The coil accumulates static electricity
The battery transforms the wire
Electric current creates a magnetic field
The wire gets heated.
What happens to the sound source when air is removed from the vacuum chamber?
The sound becomes inaudible
The sound becomes louder
The sound remains the same
The sound becomes distorted
What could be happening in the space between magnets when they interact if energy is not transferring through air?
Energy does not transfer at all
Energy is transferred through sound waves
Energy is lost in the vacuum
Energy is transferred through magnetic fields.
How could you test if air is involved in energy transfer through magnetic forces?
Increase air presence and see if magnetic forces are stronger
Remove air from the environment and observe if magnetic forces still work
Use different types of magnets to observe changes
Measure the sound produced by magnets in different air conditions
