Calculate Current

currentcurrent measurement

how to i calculate current( Before Resistance ) from these parameters

  • Voltage before Resistance

  • Voltage after resistance

  • Resistor Value

  • Current After Resistance

Best Answer

Your question leaves me puzzled, because I cannot guess what kind of circuit it relates to.

But let's assume you write about a simple loop:


simulate this circuit – Schematic created using CircuitLab

Then your parameters are:

  • Voltage before resistance = V1 (probably)
  • Voltage after resistance = V3
  • Resistance = R1 = 100 Ω (this example)
  • Current after resistance = Current before resistance = (V1-V3)/R1

The latter is due to Kirchhoffs law.

But maybe you think of an entirely different schematic? We can only guess.