Draw a labelled circuit diagram of a transistor acting as a common emitter amplifier. What is meant by phase reversal?

Explanation

### Step-by-Step Solution:

1. **Understanding the Common Emitter Amplifier:**
- A common emitter amplifier is a basic transistor amplifier configuration where the emitter terminal is common to both the input and output circuits. This configuration is widely used due to its ability to provide significant voltage gain.

2. **Drawing the Circuit Diagram:**
- Begin by sketching the NPN transistor. Label the terminals: Collector (C), Base (B), and Emitter (E).
- Connect the input signal (Vin) to the base of the transistor through an input resistor (Rin).
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