| Name | Symbol | Unit | Definition |
|
Voltage |
V |
Volt | Potential energy per Coulomb of charge between two points.
V = E/Q |
|
Current |
I |
Ampere (A) | The rate of charge flow
I = Q/t |
|
Resistance |
R |
Ohm (Ω) | The measure of difficulty of the flow in an electrical current.
R = V/I |
|
Power |
P |
Watt (W) | The rate of energy passed on to different loads within a circuit.
P = I · V |
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