LED Circuit Design: Solve for Current with Known Resistor

The video tutorial explains how to calculate the current through an LED when using a resistor of known value. It highlights the issues with exceeding power ratings and the availability of discrete resistor values. The tutorial demonstrates recalculating the current with a 220 ohm resistor using Ohm's Law, considering the voltage drop across the resistor. It also emphasizes the importance of verifying the power rating to prevent resistor burnout and discusses the impact of lower current on LED brightness.

What is the power rating check for the resistor, and why is it important?

What further steps might be needed if the LED is too dim with the calculated current?