*Question T6C07:
What is component 8 in figure T-2?*  

*Correct Answer is  D: Light emitting diode*  

### AI Response: (may contain errors)  

To determine what component 8 is in figure T-2, we need to understand the characteristics of each option provided.

### Correct Answer: Light Emitting Diode (LED)

- **Why the correct answer is correct:**
  - A light emitting diode (LED) is a semiconductor device that emits light when current flows through it. It typically has two leads (anode and cathode) and is often used in circuits for indicators or displays. If figure T-2 shows a component that emits light or has a characteristic shape associated with LEDs, then it is indeed component 8.

### Why the other choices are incorrect:

- **A: Resistor**
  - Resistors are passive components that limit current flow and do not emit light. They are usually cylindrical or rectangular in shape and do not have the distinct leads or light-emitting properties of an LED.

- **B: Inductor**
  - Inductors are also passive components that store energy in a magnetic field when current flows through them. They are typically coil-shaped and do not emit light. An inductor would not be confused with an LED.

- **C: Regulator IC**
  - A voltage regulator integrated circuit (IC) is used to maintain a constant output voltage. It usually has multiple pins and does not emit light. The appearance of a regulator IC is distinct from that of an LED, which is much simpler and smaller.

### Useful Rules of Thumb:
- **Identifying LEDs:**
  - Look for a small, often clear or colored encapsulation that emits light when powered.
  
- **Identifying Resistors and Inductors:**
  - Resistors are typically marked with color bands, while inductors are usually coil-shaped.

- **Identifying ICs:**
  - Integrated circuits have multiple pins and a rectangular or square shape, often with a part number printed on them.

By understanding these characteristics, you can confidently identify component 8 in figure T-2 as a light emitting diode.