5. What is the formula for Ohm's Law?

Ohm's Law is expressed by the formula \( V = I \times R \), where \( V \) represents voltage (in volts), \( I \) represents current (in amperes), and \( R \) represents resistance (in ohms). This fundamental relationship shows how voltage, current, and resistance are interlinked, making it easier to analyze electrical circuits and ensure they function correctly. Understanding Ohm's Law is crucial not just for electricians but for anyone engaging with electrical devices. For instance, if you want to power a LED with the right resistor to prevent it from burning out, you can calculate the necessary resistance using the voltage of your power supply and the current rating of the LED. This way, you ensure your DIY projects shine safely!