Magnetic Fields Flashcards
1
Q
What happens when a current flows through a wire?
A
A magnetic field is produced
2
Q
What happens if you put a soft iron core in a wire?
A
It creates an electromagnet and increases the strength of the magnetic field
3
Q
What’s good about an electromagnet?
A
It can be magnetised and demagnetised easily
4
Q
What’s an electromagnet used for?
A
Cranes when lifting magnetic materials
5
Q
How can you increase the strength of an electromagnet?
A
More turns of coil
6
Q
What is a magnetic field?
A
An area where magnetic materials and wires experience a force acting on them
