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The input and output resistances in a common base amplifier circuits are `400 Omega` and `400 K Omega` respectively. The emitter current is `2mA` and

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The input and output resistances in a common base amplifier circuits are `400 Omega` and `400 K Omega` respectively. The emitter current is `2mA` and current gain is `0.98`.
Power gain of tranistor is
A. `950`
B. `960`
C. `970`
D. `980`
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Correct Answer - B
Power amplification, `A_(P)= alpha A_(v)`
`=0.98xx980 = 960`.
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