🔍 Key Concepts

• Typical forward current range for small indicator LEDs • Relationship between LED brightness and current rating • Why excessively high current values can damage a standard LED

💭 Think About

• Which option best matches the common current rating you see on small panel or indicator LEDs used on bridge or electronic equipment? • Looking at the choices, which value would most likely overheat or destroy a small LED, and which seem too low to give useful brightness? • Think about standard practice: around what current do most simple LED circuits with a series resistor operate from a DC supply?

✅ Before You Answer

• Eliminate any current that is clearly too high for a small indicator LED • Consider which value is most commonly used in basic LED + resistor example circuits • Ask whether the chosen current could be safely supplied by a simple control or signal circuit without special heat sinking