For a transistor, the current gain of common-base configuration is 0.8. If the transistor is in common emitter configuration and the base current changes by 5mA, find the change in collector current.

Explanation

To solve the problem step by step, we will use the relationship between the current gain in common base configuration (α) and the current gain in common emitter configuration (β), along with the change in base current (IB) to find the change in collector current (IC).

### Step 1: Identify the given values
- Current gain in common base configuration (α) = 0.8
- Change in base current (ΔIB) = 5 mA = 0.005 A

### Step 2: Calculate the current gain in common emitter configuration (β)
The relationship between α and β is given by the formula:
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