What safety measure is typically associated with using LEDs in circuits?

Using resistors to limit current is a critical safety measure when working with LEDs in circuits. LEDs are designed to operate at a specific forward voltage and current level. If the current flowing through an LED is too high, it can lead to overheating and ultimately cause the LED to burn out or fail. By including a resistor in series with the LED, you can control the amount of current that flows through the circuit, thus protecting the LED from excessive current.

This component acts as a safeguard by creating a voltage drop that limits the current to a safe level, ensuring that the LED operates within its specified parameters and extends its lifespan. Properly calculating and selecting the resistor value based on the supply voltage, the LED's forward voltage, and the desired current is essential for the effective and safe operation of the LED in any circuit.