The current gain alpha of a transistor is defined as

Options :
  1. the ratio of change in collector current to that change in emitter current for a constant value of collector voltage in a common base arrangement
  2. the ratio of change in collector current to the change in base current for a constant collector voltage in a common collector arrangemenet
  3. the ratio of change in collector current to the change in base current for a constant collector voltage in a common emitter arrangement
  4. the ratio of change in emitter current


Answer and Explanation :-

Answer: Option 1

Explanation:

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