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Q.

In a silicon transistor, the base current is changed by 20 μA. This results in a change of 0.02 V in base to emitter voltage and a change of 2 mA in the collector current. The transistor is used as an amplifier with the load resistance of 5 kΩ. The change in output voltage across load is

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a

20 V

b

10 V

c

100 v

d

5 V

answer is B.

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Detailed Solution

Input resistance Rin=0.0220×10−6=2×10420Ω=103ΩChange in output across load = 5000 x 0.002 V = 10 V

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