For a transistor working as common base amplifier, the emitter current is 0.72 mA. The. Current gain is 0.96. The collector current is

Options

A. `0.96xx0.72mA`
B. `(0.96)/(0.72)mA`
C. `0.96-0.72mA`
D. `7.2A-2xx0.96mA`

Answer

To find the collector current (IC) in a common base amplifier configuration, we can use the relationship between the emitter current (IE), the collector current (IC), and the current gain (α).

### Step-by-Step Solution:

1. **Identify the Given Values:**
- Emitter current (IE) = 0.72 mA
- Current gain (α) = 0.96

2. **Use the Formula for Collector Current:**
The relationship between the collector current (IC), emitter current (IE), and current gain (α) in a common base configuration is given by:
\[ IC = \alpha \times IE \]

3. **Substitute the Given Values into the Formula:**
\[ IC = 0.96 \times 0.72 \, \text{mA} \]

4. **Calculate the Collector Current:**
\[ IC = 0.6912 \, \text{mA} \]

5. **Round the Result (if necessary):**
The collector current can be rounded to two decimal places:
\[ IC \approx 0.69 \, \text{mA} \]

### Final Answer:
The collector current (IC) is approximately **0.69 mA**.