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WorksheetsUnderstanding Magnetism and Electricity
Total questions: 20
Worksheet time: 11mins
Who discovered that electricity and magnetism are related in 1820?
James Clerk Maxwell
Hans Christian Oersted
Michael Faraday
Joseph Henry
What is the main principle behind electromagnetic induction?
Moving a magnet through a coil
Heating a metal wire
Applying a voltage to a coil
Cooling a metal rod
What type of current does a battery produce?
Magnetic Current
Direct Current (DC)
Alternating Current (AC)
Static Electricity
What is the role of a transformer?
To store electrical energy
To reduce electrical resistance
To increase or decrease voltage
To generate electricity
What material is not attracted to magnets?
Nickel
Iron
Copper
Cobalt
What is a permanent magnet made from?
Plastic
A magnetic material in a strong magnetic field
Wood
Any metal
What happens when the direction of electric current in a wire reverses?
The wire heats up
The magnetic field around the wire reverses
Electricity stops flowing
The wire becomes a permanent magnet
What is the purpose of an electric motor?
To measure electric current
To convert mechanical energy into electrical energy
To store electricity
To convert electrical energy into mechanical energy
What are magnetic domains?
Areas outside a magnet where magnetic force is felt
Small permanent magnets
Electric currents within a magnet
Groups of atoms with aligned magnetic poles
How do unlike magnetic poles interact?
They cancel each other out
They attract each other
They repel each other
They do not interact
What is the effect of increasing the current in the wire of an electromagnet?
Increases the magnetic field strength
Has no effect on the magnetic field
Makes the electromagnet a permanent magnet
Decreases the magnetic field strength
What is the function of the turbine in a power plant?
To convert AC to DC
To rotate and generate mechanical energy
To cool down the system
To produce steam
What causes the magnetic field inside a generator's coil to change?
The temperature of the coil
The coil rotating between the poles of a magnet
The size of the coil
The type of wire in the coil
What is the main difference between AC and DC?
AC is produced by batteries, while DC is produced by generators
AC reverses direction, while DC flows in one direction
AC can only be used in motors, while DC can only be used in generators
AC is safer than DC
How can the strength of an electromagnet be increased?
By painting it
By using a smaller iron core
By adding more turns of wire to the solenoid
By cooling it down
True or False. Moving electric charges can create magnetism AND changing magnetic fields can cause electric charges to move.
true
false
Given the definition, select the correct vocabulary word: a property of certain kinds of materials that causes them to attract ion or steel
net force
magnetism
gravitational field
magnetic field
What is an electromagnet?
a magnet that becomes neutral due to electricity
a magnet created by electric current flowing through wires
a magnet that produces electricity
a electrical current that has magnets
What is the principle behind electric generators?
Electrostatic induction
Electromagnetic induction
Photoelectric effect
