The input resistance of a silicon transistor is \( 100 \mathrm{~W} \). Base current is changed b...

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The input resistance of a silicon transistor is \( 100 \mathrm{~W} \). Base current is changed by \( 40 \mu \mathrm{A} \) which results in a change in collector current by \( 2 \mathrm{~mA} \). This transistor is used as a common emitter amplifier with a load resistance of 4 \( \mathrm{K} \Omega \). The voltage gain of the amplifier is
(a) 2000
(b) 3000
(c) 4000
(d) 1000
\( \mathrm{P} \)
W
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