Pages 3456 Flashcards
When a electric current flows in a wire it creates a
Magnetic field around the wire
Where r the fields strongest
Poles
What direction do the fields go
North to south
Like poles
Repel
Magnetic materials
Iron cobalt and nickel
How can a magnetic field around a electromagnet be reversed
By turning the battery around
How can magnetism be turned on or off
By opening or closing a switch
How can u increase the strength of the electromagnet
Wrapping coil around iron core
Increasing the number of coils
And increasing the current
Strongest part of bar magnet
Pole
Area around a magnet
Field
What do 2 like poles do
Repel
What type of magnet produces its own field
Peppermint
What is a coil of current carrying wire called
Solenoid
What poles attract
Unlike
What type of magnetism is lost when the current is of
Induced
What effect does a magnet have on magnetic material
Attract
What metal is used as a core on a electromagnet
Iron
What has to flow in wire to create a field
Current
Conductor
Material that allows charge to flow through
Insulator
Material that doesn’t let charge through
Charge
Property of particles. Build up of positive or negative particles
Discharge
Neutrilises a charged object by roemivg or adding negative electrons
Current
Flow of electricity bc of charged protons
Series circuit
Circuit of chained components
