A transistor is used as an amplifier in common base mode with a load resistance of 5 kΩ . The current gain of the amplifier is 0 . 98 and the input resistance is 70 kΩ , the voltage gain is

Question

A transistor is used as an amplifier in common base mode with a load resistance of 5 kΩ . The current gain of the amplifier is 0 . 98 and the input resistance is 70 kΩ , the voltage gain is, 70, 80, 60, 90

MARKS App · Accepted Answer

Here, in common base mode α = 0.98 , R = 5 k Ω = 5 × 10 3 R i n = 70 Ω Voltage gain A V = α × R R i n = 0.98 × 5 × 10 3 70 = 70

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