Physics-Electricity Flashcards
To learn about electricity and magnetism
Define
Electrons
A subatomic particle with a negative electric charge
Define
Electrcity
What powers appliances
What are the three main charges a atom can possess:
- Postive
- Negiative
- Neutral
What are the three main charge rules?
- Opposite attract
- Like repel
- Neutral do nothing
What charge are:
* Electrons
* Protons
* Neutrons
- Negiative
- Postive
- Neutral
Unit for
Charge
Coulomb
6,240,000,000,000,000,000 electrons worth of charge
Define
Static electricty
A build-up of electrical charge on an object, which can be either positive or negative.
Define
Electric Current
An electric current is a flow of charged particles in one direction. In solids, an electric current is the flow of free electrons in one direction.
Define
Electric Circuit
An electrical circuit is made up of components, which are connected together using wires.When currents are put into a loop, with a battery pushng it around
Define
Circuit diagrams/symbols
A efficent way to repersent circuits
Define
Components
A part of a circuit
Eg. A battery, motor, lamp, switch or wire.
Define
Volts/Potential difference
p.d
How much electrical energy each electron possess in a part of the circuit.
High voltage:More energy
Low voltage:Little energy
Define
Ohms/resisitance
How easy it is for a current to pass through a wire
High resistance:High Loss of energy
Low resisitance:Low loss in energy
Semi-conducting:Negible energy loss
Superconducting:No loss in energy
Define
Amps
How much charge passes a specifc point in a second
differencee betweeen
- Series
- Parrell
- One loop circuit
- Multi-loop circuit
