Magnets Flashcards
1
Q
What is the magnetic field (2)
A
The area around a magnet, it’s invisible but we can see its effects
2
Q
What are the effects of magnetic fields (3)
A
- concentric circles
- it flows from the n -> s pole
- the field lines don’t cross
3
Q
What is the right thumb rule used for (1)
A
It’s used to see the direction of the field around an electric conductor
4
Q
How do you use the right thumb rule (2)
A
Point your thum in the direction of the current
Your bent fingers indicate the direction
5
Q
Electricity is also used to make magnetism in electromagnets. How would you use the right thumb rule in this situation (2)
A
The thumb inducates the north pole
The curved fingers indicate the flow of the current
6
Q
What ine thing is needed to make an electromagnet work (1)
A
electricity (current)
