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To find the current gain β from α for a power transistor, you can use the relationship:
[
beta = frac{alpha}{1 – alpha}
]
Substituting the given value of α:
[
beta = frac{0.97}{1 – 0.97} = frac{0.97}{0.03} approx 32.33
]
So, the answer is:
β ≈ 32.33
d
Explanation: Use the relation α = β/(β+1).