Ch.6 Sec. 2 Flashcards
(10 cards)
Electric current
The net of movement of an electric charge in a single direction or the rate the charges flow through a wire or conductor
Rate charges flow
Ex. When electric currents flow through lights
Voltage difference
Related to the force that causes the changes to flow
Force causes the changes to flow
Ex. Dimmers
Electric circuit
A close path that electric current flows or a continuous loop through which an electric current can flow
A cut of path the electric current flows or a non stop loop
Ex. A light switch turned on
Resistance
The tendency for material to oppose the flow of electrons changing electrical energy into thermal energy and light
No flow through a material that electrons changing electrical energy to thermal energy
Ex. To stop
Ohm’s Law
The current in a circuit equals the voltage difference divided by the resistance
Current equals the voltage difference
Ex. Current = voltage
Volts
The SI unit of electro motive force, the difference of potential that would drive the one ampere of the current against the one ohm resistance
SI unit of electro motive force
Ex. V
Amps
Unit of electric current equal to the flow of one coulumb per second
Unit of electric current equal to the flow
Ex. A
Types of batteries and how they work
Dry cell battery: voltage difference between a single container and it’s carbon suspension rod, using current to flow between them
What cell battery: two connected plates made of different metals in conducting situation
Electrical outlets: voltage difference between the two holes of the outlet, provided by a generator at the energy company
AC/DC
Alternating current: current that alternates or changes directions
Direct current: current the only flows in One Direction
Ex. AC: usually supplied by electric outlets
DC: usually supplied by batteries
I = V
R
I = Amps R = Ohms V = Volts
