Ohm's law describes the relationship between voltage, current, and resistance.
Voltage and current are related such that voltage is equal to current times resistance:
Common units used in electronics calculations are:
V = mA × kΩ
the current going through any point in the circuit, I, will be equal to the voltage V divided by the resistance R.
In this example, the voltage across the resistor, V, will be equal to the supplied current, I, times the resistance R.
- V=I times R
- I=V divided by R
- R=V divided by I