Static & Current Electricity
What type of electricity is caused by the buildup of electric charges on a surface?
static electricity
What happens if one bulb burns out in a series circuit?
The entire circuit stops working.
What are the two poles of a magnet called?
north and south poles
What is an electromagnet made of?
A coil of wire wrapped around a metal core.
What are the three main types of heat transfer?
conduction, convection, and radiation
What type of material allows electric charges to flow easily?
Conductor
In which type of circuit do all components share the same current?
series
What happens when two like poles of magnets are brought together?
They repel.
How can you increase the strength of an electromagnet?
By increasing the number of coils or increasing the current.
Which type of heat transfer occurs through direct contact?
conduction
What type of material resists the flow of electric charges?
Insulator
In which type of circuit does each component have its own path for current?
Parallel circuit
What happens when opposite poles of magnets are brought together?
They attract.
What happens to an electromagnet when the current is turned off?
It loses its magnetism.
Which type of heat transfer occurs through fluid movement?
convection
What subatomic particle moves to create electric current?
Electron
What happens if one bulb burns out in a parallel circuit?
The other bulbs stay lit.
What is the region around a magnet where forces act called?
magnetic field
What is the main advantage of an electromagnet over a permanent magnet?
It can be turned on and off.
Which type of heat transfer occurs through electromagnetic waves?
radiation
What is the flow of electric charge called?
Current electricity
What unit is used to measure electrical resistance?
ohm (Ω)
What tiny regions inside a magnet align to create magnetism?
magnetic domains
What common device uses an electromagnet to function?
doorbell
What happens to molecules when they are heated?
They move faster