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For a common emitter amplifier, the volt...

For a common emitter amplifier, the voltage gain is 40. Its input and output impedances are 100 `Omega` and 400 `Omega` respectively. The power gain of the C.E. amplifier will be

A

300

B

400

C

450

D

500

Text Solution

Verified by Experts

The correct Answer is:
B
40=Current gain x `400/100`
`therefore ` Current gain = 10
`therefore` Power gain = Voltage gain x Current gain = 400
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