Magnetism

Question 1

what is a magnetic field?

Answer 1

a region in which a force is exerted on magnetic materials ie for magnetic fields to work, they must be magnetic, and for gravity to work, object must have mass

Question 2

how are materials magnetised?

Answer 2

magnetic domains line up and point in the same direction, and material becomes fully magnetised

Question 3

what is another name for magnetic objects?

Answer 3

ferromagnetic materials

Question 4

what do magnetic field lines show?

Answer 4

the field lines go from north to south,

SHOWs THE direction that a north pole would move

Question 5

describe the right hand grip rule?

Answer 5

the right hand grip rule shows the direction of current and magnetic field. the thumb represents flow of current and the fingers direction of folding represent direction of magnetic field

thumb = direction of current
fingers = curl in direction of magnetic field

Question 6

how can we distinguish if a current is going in or out of the page?

Answer 6

dot = out of the page
cross = back of arrow = into the page