P7 Flashcards
1
Q
What is an induced magnet
A
magnetic material that turns into a magnet when they are put in a magnetic field
2
Q
what is the motor effect
A
a current carrying wire in the presence of a magnetic field will experience a force
3
Q
what angle does the wire need to be at to experience the full force of the motor effect
A
90 degrees
4
Q
what 2 things do you need to know to work out the direction of a force
A
direction of the magnetic field
direction of current
5
Q
what is the magnetic field inside a solenoid
A
strong and uniform
6
Q
what are magnetic fields made up of
A
concentric circles perpendicular to the wire
7
Q
how to increase the strength of a soleniod
A
wrap wire into a coil
put an iron block into the middle of the coil
8
Q
what is a soleniod
A
a coil of wire
