Current through a 220 Ω resistor at 5 V

Answer: current = 0.023 A (power 0.11 W).

What we know

  • Voltage: 5 V
  • Resistance: 220 Ω

Step by step

Given
V = 5 V, R = 220 Ω
Formula
I = V / R
Substitute
I = 5 / 220
Result
I = 0.023 A

All results

Current0.023 A
Power0.11 W

Open the ohm's law calculator with these numbers → and change any of them.

The physics

Ohm's law says current through a conductor is voltage divided by resistance. Voltage is the electrical 'pressure', resistance the narrowness of the pipe, and current the resulting flow.