Electrical Circuits Flashcards
Current
The rate of flow of charge
Potential difference
The work done per unit positive charge
Ohm’s law
Current through a conductor is directly proportional to the potential difference across the conductor at constant temperature
Resistance
A material’s opposition to the flow of electric current
EMF
The total amount of energy supplied per coulomb of charge by the cell
Electrical power
The electrical power dissipated in a device is equal to the product of the potential difference across the device and the current flowing to the device
Kilowatt hour
It is a unit of energy and 1 KWh is the amount of energy used when 1 kilowatt of energy is used for 1 hour
Internal resistance
The resistance inside a real battery