Zusammenfassung der Ressource
Frage 1
Frage
What is an electromagnet?
Antworten
-
A magnet created by the flow of electricity through metal.
-
A magnet made out of long wires
-
An electrical circuit that is built with a magnet as the conductor.
Frage 2
Frage
An electromagnet can be switched on and off.
Frage 3
Frage
[blank_start]Solenoids[blank_end] are powerful electromagnets made from wire being wrapped around a nail and connected to a battery.
Frage 4
Frage
What three things is an electromagnet made with?
Frage 5
Frage
Electromagnets can be found in doorbells.
Frage 6
Frage
The difference between a magnet and an electromagnet is that you can increase or decrease the power of the electromagnet by [blank_start]controlling[blank_end] the [blank_start]supply[blank_end] of electricity.