Transistor current gain β = I_C/I_B. Typical value range:

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BJT common-emitter current gain β typically 20-200. Small base current controls larger collector current. Memory aid: 'β = collector/base current ratio; value 20-200 for standard transistors'. Electronics parameter frequently tested in competitive exams.

Transistor current gain β = I_C/I_B. Typical value range: MCQ with Answer and Explanation

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