text: # What is the emitter current $I_E$ in a transfer where base current $I_B$ is $20 \mu A$ and $\beta =40$
  
  $(a)\;1\;mA \\ (b)\;0.52\;mA \\ (c)\;1.82\;mA \\ (d)\;0.82\; mA$
  
  ## 1 Answer
  
  We know
  $\beta =\large\frac{I_c}{I_B}$
  $I_c= 40 \times 20 \mu A$
  $\qquad= 800 \mu A$
  $\qquad= 0.8 mA$
  $I_B= 0.02 mA$
  $\therefore I_E =I_B+I_C$
  $\qquad= 0.02 mA+ 0.8 mA$
  $\qquad= 0.82 mA$
  Hence d is the correct answer.
  answered Jan 28, 2014 by
  
  1 answer
  
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explanation: The document contains a math question related to calculating the emitter current in a transistor, given the base current and the current gain (β). The document also includes the correct answer and the detailed steps to solve the problem.
distilabel_metadata.content: Evaluate the user given text extract and determine if it contains a math question and optionally and answer to this question.
  
  Output rules:
  
  1. Briefly describe the document and mention if it contains a question or a question and answer.
  2. Finalize the output with: Label: no-question,question,question-and-answer,multiple-question,multiple-question-and-answer
distilabel_metadata.role: system
distilabel_metadata.content: # What is the emitter current $I_E$ in a transfer where base current $I_B$ is $20 \mu A$ and $\beta =40$
  
  $(a)\;1\;mA \\ (b)\;0.52\;mA \\ (c)\;1.82\;mA \\ (d)\;0.82\; mA$
  
  ## 1 Answer
  
  We know
  $\beta =\large\frac{I_c}{I_B}$
  $I_c= 40 \times 20 \mu A$
  $\qquad= 800 \mu A$
  $\qquad= 0.8 mA$
  $I_B= 0.02 mA$
  $\therefore I_E =I_B+I_C$
  $\qquad= 0.02 mA+ 0.8 mA$
  $\qquad= 0.82 mA$
  Hence d is the correct answer.
  answered Jan 28, 2014 by
  
  1 answer
  
  1 answer
  
  1 answer
  
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distilabel_metadata.role: user
distilabel_metadata.raw_output_q_a_detector_0: The document contains a math question related to calculating the emitter current in a transistor, given the base current and the current gain (β). The document also includes the correct answer and the detailed steps to solve the problem.
  
  Label: question-and-answer