WorksheetsElectric Motor
Total questions: 10
Worksheet time: 5mins
Electric motors are devices that convert _____ energy into _____ energy.
answer choices
electrical; mechanical
mechanical; electrical
chemical; potential
mechanical; kinetic
What is formed when a wire in an electric circuit is wrapped around an iron core producing a magnetic field?
electromagnet
generator
magnet
electric motor
The flow of electric charge in a circuit is called _______.
Heat
Sound
Electric Current
Magnetic
Like magnetic poles push each other away
true
false
A type of magnet that has temporary magnetic effect when electric current flows through it.
Electric
Electrostatic
Electromagnet
Electronic
Q.
An electromagnet differs from a permanent magnet because
permanent magnets require the movement of electrons, while electromagnets do not.
electromagnets only have one pole, while permanent magnets always have two.
electromagnets can be turned off or weakened by reducing to stopping the flow of current.
permanent magnets require an electrical current to produce a field.
What component becomes a temporary magnet when electricity is flowing through the circuit?
iron nail
copper wire
battery
switch
What component provides the pathway to carry electricity from component to component?
battery
switch
wire
iron nail
You can make an electromagnet stronger by: having a __________________ current in the wire
larger
smaller
water
greener
What is the metal center of an electromagnet called?
The current
The wire
The coil
The ferromagnetic core
