QUESTION 1 (5marks) 1. Describe the energy diagram for a forward-reverse biased BJT. 2. Define a. 3. Define beta 4. Determine a if beta =200

1. The energy diagram for a forward-reverse biased BJT (Bipolar Junction Transistor) typically shows the energy levels of the electrons and holes in the transistor. In a forward-biased BJT, the energy levels of the electrons and holes are aligned such that the electrons can easily flow from the emitter to the base, and the holes can easily flow from the base to the collector. In a reverse-biased BJT, the energy levels of the electrons and holes are aligned such that the electrons cannot easily flow from the collector to the base, and the holes cannot easily flow from the base to the emitter.<br /><br />2. $a$ is a constant that represents the current flowing through the base of the BJT. It is also known as the base current.<br /><br />3. $\beta$ is a constant that represents the current gain of the BJT. It is also known as the current amplification factor. It is defined as the ratio of the collector current to the base current, i.e., $\beta = \frac{I_C}{I_B}$.<br /><br />4. If $\beta = 200$, then the current gain of the BJT is 200. This means that for every 1 mA of current flowing through the base, 200 mA of current will flow through the collector.