6.1 Magnetic field lines Flashcards
On a diagram of a magnetic field what do the lines represent
The magnetic lines of force
How can you investigate the shape of a magnetic field
You could use a tiny compass or you could sprinkle iron filings onto paper or card placed over the magnet
In which direction do the magnetic lines of force travel in
From north to south
Like electric and gravitational fields, where is the magnetic field the strongest
Where the magnetic field lines are closest together, (dense)
What happens when the magnetic lines of force from two magnets overlap
Their effects will add to give a single magnetic field shape. Somewhere between the two N and s poles the two magnetic fields cancel each other out and this is called a neutral point
How can we locate the neutral point experimentally
The neutral point will be a place where the compass does not know which way to point
What does the symbol x represent
Current going into the page
What does the symbol o represent
Current going out of the page
Define a solenoid
A current carrying wire that is twisted into coils
