 # physics electricity

Flashcards by , created about 3 years ago

## Electricity key definitions & formulas 8 0 0  Created by Liv Gran about 3 years ago
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 Question Answer Alternating Current (AC) a flow of electric current that keeps changing direction at a very fast rate Direct Current (DC) an electric current that flows in one direction only. It is the form in which batteries supply electricity. Current - a flow of electricity - measured in Amps (A) - charge= charge passing/ time taken - I=Q/t ( to remember equation think: I quit) Energy a form of power Voltage (V) - energy given/ carries per unit charge - measured in volts (V) Resistance - a measure of how difficult it is for charge to flow. - measured in Ohms (Ω) - in equations it has the symbol R Power - the rate of transfer energy - rate means per second - measured in Watts Energy a form of power such as electricity, heat, or light that is used for making things work. static electricity electricity that does not flow in a current but is found in some objects when they rub together & give an electric shock Voltmeter a piece of equipment used for measuring voltage Ammeter -( not Amita) ] Measures the flow of current