A
Magnetic metal C
Cobalt
Magnetic metal I
Iron
Magnetic metal N
The two ends of a magnet
Poles
Where the magnetic field of a magnet is strongest
Poles
The direction of a magnetic field
N to S
A magnet that has its own magnetic field
Permanent
A magnet that only becomes a magnet when it is placed in another magnetic field
Induced
The type of magnet that only every attracts
Induced
A coil of wire
Solenoid
Three ways to increase the strength of an electromagnet
More coils
More current
Iron core
Compass
What is the shape of the field around a current carrying wire?
Circular
What is the thumb on Fleming's left hand rule?
Force / movement
What is the forefinger on Fleming's left hand rule?
Field
What is the second finger on Fleming's left hand rule?
Current
What causes the Earth's magnetic field?
Molten outer core
What effect allows motors to spin?
Motor effect
What ways are there to increase the speed of a motor?
More coils
More current
How do you make a motor spin in the opposite direction?
Reverse the current
What is the unit for current?
Amp
What is the unit for magnetic flux density?
Tesla
What must length be measured in in physics? If you don't you answer will be out by 100!!!!!!
Metres
When a conductor carrying a current is placed in a magnetic field the magnet producing the field and the conductor do what?
Exert a force on each other
If the current is moving towards the board/projector and the field is from the floor to the ceiling which way would the force on the wire be?
Right or towards the door