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-the amount of electrons (like the number of molecules of water)
-represented by "Q"
- measured in coulombs
- 1 C = 6.24*10^8 electrons

a measure of the magnitude of the flow of electrons in a circuit. It is measured in Amperes, or Amps.

Water analogy:
current would be how much water (or electricity) is flowing past a certain point. The higher the amperage, the more water (or electricity) is flowing.

current would be how much water (or electricity) is flowing past a certain point. The higher the amperage, the more water (or electricity) is flowing.


Water analogy: voltage would be pressure.

Adds energy to the current.

-a measure of a material's ability to oppose the flow of electricity.

e.g. a sponge in a pipe. Limits current flowing through.