CBSE Class 12-science Answered
Draw a circuit diagram for use of NPN transistor as an amplifier in common emitter configuration. The input resistance of a transistor is 1000 Ω. On changing its base current bv 10 uA. the collector current increases bv 2 mA.
If a load resistance of 5 k Ω is used in the circuit, calculate:
(i) The current gain
(ii) Voltage gain of the amplifier
Asked by Topperlearning User | 10 Jul, 2014, 14:24: PM
Numerical: Given
Rin = 1000 Ω
Δ IB = 10 μA = 10-5 A
ΔIC = 2mA = 2 x 10-3A
Rout = 5 kΩ = 5 x 103 Ω
(i) Current gain
(ii) Voltage gain
Answered by | 10 Jul, 2014, 16:24: PM
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