🔍 Key Concepts

• LEDs (Light Emitting Diodes) are current-sensitive devices and can be damaged if too much current flows through them. • To limit current in a DC circuit, a specific type of component is typically placed in series with the load. • Capacitors and coils behave differently from resistors in a steady DC circuit.

💭 Think About

• Which component is normally used to control or limit current in a simple DC circuit with a battery and an LED? • In a steady DC circuit, what does a capacitor to ground mainly affect—voltage spikes, current level, or something else? • What is the basic purpose of a coil (inductor) in a circuit, and is that how you usually protect an LED?

✅ Before You Answer

• Identify which option’s primary function is to limit current in a DC circuit. • Eliminate any options whose main role is filtering, smoothing, or handling AC/ripple, not steady DC current limiting. • Confirm that the chosen component is commonly shown in beginner LED wiring diagrams between the power source and the LED.