Electricity Flashcards
Deck of flashcards intended for studying the electricity section of the AQA Physics A level specification.
What is charge?
Charge is the amount of electrons contained within a circuit.
What is charge’s SI unit?
Charge’s SI unit is coulombs.
What is charge represented as in equations?
Charge is represented as the letter ‘C’ within equations.
What is current?
Current is the rate which electrons flow past a point in an electrical circuit.
Essentially it is coulombs per second.
What is current’s SI unit?
Currents SI unit is Amperes also known as amps.
What is current represented as in equations?
Current is represented as the letter ‘I’ within equations.
What is voltage?
Voltage is the work done per unit charge between two points within a circuit.
It is also known as potential difference.
What is voltage’s SI unit?
Voltage’s SI unit is volts.
What is voltage represented as in equations?
Voltage is represented with the letter ‘V’ in equations.
What is resistance’s SI unit?
Resistance’s SI unit is Ohms (Ω). Ω is the Greek letter omega.
What is resistance represented as in equations?
Resistance is represented with the letter R in equations.
What is the equation which links:
voltage, resistance and current?
V=IR
What is Ohms law?
Ohms law states: ‘An ohmic components current is directly proportional to its voltage, given all physical conditions are kept constant.’
What is an example of an Ohmic conductor?
Resistors
What does the graph for a filament look like?
google it I’m not paying for premium lol
