Section 6 - The Motor Effect Flashcards
What happens if you put a current carrying wire into a magnetic field? And why.
As two magnetic fields affect one another the current carrying wire will experience a force which can cause the wire to move.
This is due to the charged particles Macintosh through a magnetic field will experience a force. As long as they don’t move parallel to field lines.
Draw what happens if a wire carrying current out of the page went through a uniform field between two bar magnets.
South on the right
North on the left
Look at page 65
Is there a way so that the current carrying wire doesn’t feel any force at all?
Yes if it runs along the magnetic field.
How do you increase the magnitude of the force?
By increasing the strength of the magnetic field.
By increasing the current in the wire.
What happens if you reverse the current or the magnetic field?
They also reverse the direction of the force.
How can you tell which way the force acts?
Fleming’s left hand rule.
What do each finger stand for in Flemings left hand rule?
First finger - field
Second finger - current
Thumb - force (motion)
