Electromagnets Flashcards
1
Q
Electromagnets are also known as……
A
Temporary magnets or induced magnetism
2
Q
Electromagnets only work when……
A
The electricity is on
3
Q
A coil of wire is called a….
A
Solenoid
4
Q
Factors that affect the strength of an electromagnet:
A
- Current
- Number of TURNS on the solenoid
- Potential difference
- Presence of a metal core
5
Q
Steel is not used as a core because…..
A
It stays magnetised
6
Q
When turned on, electromagnets……
A
Attract, but don’t repel
