WorksheetsElectricity and Magnetism Quiz
Total questions: 12
Worksheet time: 6mins
Electric motors are used to move cars, boats, and trucks. Which of the following is necessary for a motor to work?
magnetism and heat
heat and electricity
gravity and electricity
electricity and magnetism
This is a simple electromagnet. What is creating the magnetic field around an electromagnet?
the nail
the battery
the paper clip
the electric current in the wire
James and Anthony have both built their own electromagnets. Anthony’s electromagnet can pick up heavier objects than James’ magnet can. What could be the cause of this?
Anthony is using a longer bolt to create his electromagnet.
Anthony is holding his electromagnet closer to the battery than James.
Anthony’s battery is lying on its side, allowing the electricity to flow through the wires more easily.
Anthony has more wire loops around his bolt creating a stronger magnetic field.
In an electric motor what is the effect of the magnetic field on the wire coil?
There is no movement.
The wire coils will rotate.
The magnetic poles reverse.
Electricity is recycled into the motor.
If you make an electromagnet, why should you place an iron rod in the coil?
You move it in and out of the coil.
It makes the magnetic field stronger.
It lets you turn the electromagnet on and off.
You hold it so the electricity won’t hurt you.
How can a magnet create electricity?
A magnetic field pushes and pulls protons in an object.
A magnetic field pushes and pulls electrons in an object.
An electric current flows through a magnet.
An electric current creates an electromagnet.
What advantage does an electromagnet have over a permanent magnet?
Electromagnets are easier to make than permanent magnets.
Electromagnets are lighter than permanent magnets.
Electromagnets can attract different materials than permanent magnets.
Electromagnets can be turned off and on.
Look at the diagram of the electromagnet. How can the power of the electromagnet be increased?
Change the nail to a straw.
Change the wire to a string.
Wrap the wireless times around the nail.
Wrap the wire more times around the nail.
Kaitlyn is trying to build a small generator. She loops one wire around a large magnet and another wire around a compass. She then attaches the ends of the wire together to complete the circuit. She waits, but nothing happens. What suggestion would best help Kaitlyn with her generator?
Wrap the wire tightly around the magnet.
Replace the magnet with one that is larger.
Move the magnet back and forth inside the wire loops.
Add more wire loops around the magnet.
How does a generator create electric current?
motion in a series circuit
motion in a magnetic field
magnets in a parallel series of wires
magnet and wires have to form a circuit
Theresa wants to rebuild the motor in her toy car. She finds wire and a battery. What else would she need to build an electric motor?
magnets
gasoline
light bulb
plastic cover
What is creating the electrical energy in a generator?
batteries
wires
wind
magnets
