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An N-P-N transistor is being used in CE mode for which the current transfer ratio is, α = 25 26 . The input resistance is 1000 Ω and amplitude of A.C. input voltage is 10 mV . The amplitude of the amplified output collector current is

Options

  1. A25 μ A
  2. B250 μ A
  3. C125 μ A
  4. D50 μ A

Correct answer

B. 250 μ A

Step-by-step solution

β = α 1 - α or 25 26 1 - 25 26 = β = 25 and Input current I b = V i R i = 10 mV 1000 Ω = 10 μA we know, β = I c I b = 25 ∴ Output current I c = 25 I b = 250 μA

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