Magnetic Fields Flashcards
1
Q
What direction do flux lines go?
A
North to south
2
Q
How is strength of a mag field represented?
A
How close together field lines are at a point
3
Q
What can be said about a magnets field?
A
Uniform
4
Q
When current flows in a wire…..
A
a magnetic field is induces
5
Q
A conductor carrying current in a magnetic field will…..
A
….experience a force
6
Q
How do two mag fields interact ?
A
Add together to give resultant flux lines
7
Q
What to flux lines tend to do?
A
Shorten and straighten
8
Q
What direction is the force?
A
Perfpendicular to both current and mag field?
9
Q
What is force on a wire proportional to
A
Flux density,current, length
10
Q
Unit of mag flux density
A
Tesla
11
Q
Digital balance practical graph shows
A
Force against current to find field
