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A common emitter amplifier circuit, built using an \( n p n \) transistor, is shown in the figure. Its dc current
\( \mathrm{P} \) gain is \( 250, R_{C}=1 \mathrm{k} \Omega \) and \( V_{C C}=10 \mathrm{~V} \). What is

W the minimum base current of \( V_{C E} \) to reach saturation?
(1) \( 40 \mu \mathrm{A} \)
(2) \( 100 \mu \mathrm{A} \)
(3) \( 7 \mu \mathrm{A} \)
(4) \( 10 \mu \mathrm{A} \)
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