LEDs in series and parallel - Ohms Law

@MakotoNinja

8 years ago

https://everycircuit.com/circuit/6441641029402624

5V Power Source. Four 2V 20mA LEDs. Two LEDs in series requiring 4V so we need a voltage drop of 1V. Two LEDs in parallel requiring 40mA of current. 1V / 0.04A = 25Ω