Question

An electromagnet is the most powerful type of magnet there is. It is a magnet with a current running through it that can be turned on and off. Why might it be useful to be able to turn the electromagnet on and off?(1 point)
Responses

to not waste electricity
to not waste electricity

to reduce wearing out of the magnet over time
to reduce wearing out of the magnet over time

to control the strength of the magnet
to control the strength of the magnet

to latch onto and let go of objects

Answer 1

to latch onto and let go of objects

Answer 2

What does electric current measure?(1 point)
Responses

how frequently electrical energy moves in a circuit
how frequently electrical energy moves in a circuit

how quickly electrical energy moves in a circuit
how quickly electrical energy moves in a circuit

how well electrical energy moves in a circuit
how well electrical energy moves in a circuit

how much electrical energy moves in a circuit

Answer 3

how much electrical energy moves in a circuit

Answer 4

How is a magnetic field produced?(1 point)
Responses

when electrons move through a circuit
when electrons move through a circuit

when an object has an electric charge
when an object has an electric charge

when a current runs through a conductor
when a current runs through a conductor

when an electromagnetic field interacts with a magnet

Answer 5

when a current runs through a conductor

Answer 6

Which statement best describes how an electromagnetic motor works?(1 point)
Responses

Electrons are moved through a current, creating a circuit. That circuit interacts with a magnet, moving the conductor in the orientation of the field.
Electrons are moved through a current, creating a circuit. That circuit interacts with a magnet, moving the conductor in the orientation of the field.

Electrons are moved through a magnet, creating a circuit. That circuit interacts with a current, moving the conductor in the orientation of the field.
Electrons are moved through a magnet, creating a circuit. That circuit interacts with a current, moving the conductor in the orientation of the field.

Electrons are moved through a circuit, creating a current. That current interacts with a magnet, moving the conductor in the orientation of the field.
Electrons are moved through a circuit, creating a current. That current interacts with a magnet, moving the conductor in the orientation of the field.

Electrons are moved through a magnet, creating a current. That current interacts with a circuit, moving the conductor in the orientation of the field.
Electrons are moved through a magnet, creating a current. That current interacts with a circuit, moving the conductor in the orientation of the field.

Answer 7

Electrons are moved through a circuit, creating a current. That current interacts with a magnet, moving the conductor in the orientation of the field.