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Common-emitter transistor with β = 100 has base current 50 μA. Collector current:
A50 μA
B5 mA (= β × I_B)
C100 mA
D0.5 A
Answer & Solution
Correct answer: B. 5 mA (= β × I_B)
I_C = β × I_B = 100 × 50 μA = 5000 μA = 5 mA. Emitter current I_E = I_C + I_B = 5.05 mA. Current gain (amplification) is the basis of transistor amplifiers.
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