click below
click below
Normal Size Small Size show me how
Electricity
Term | Definition |
---|---|
Current | The number of electrons flowing in a circuit |
Amperes | Unit for current |
1 Amp | 1 Coulomb/second |
Voltage or Potential Difference | Electrical potential energy per coulomb of charge |
Resistance | When electrons flow with some opposition |
Resistors | Device the reduces or controls the flow of electricity |
Ohm's Law | Current = Voltage / Resistance |
Ohms | Units of resistance |
Volts | Units of electric potential |
DC, Direct Current | The charge flows in one direction only like in batteries |
AC, Alternating Current | Electrons in the circuit move in one direction, then switch and then flow in the opposite direction, wall outlets |
Adapters | A device that converts AC into DC or vice versa |
Diodes | Allow electrons to flow in one direction only. They help change AC into DC |
Electrical Power | The work done per unit of unit |
Watt | Unit of Electrical Power |
Power | Power = Current x Voltage (P = IV |
Series Circuits | Arranging components in a electrical circuit that creates one large continuous loop with the components |
Parallel Circuit | A circuit in which each component is connected separately in its own "loop" |
Fuse/Circuit Breakers | Devices designed to prevent too much current and causing a fire |
Multimeter | A device that measures voltage, current and resistance digitally or an analog reading |
Ammeter | A meter that only measures current |