Problem Statement
n-p-n transistor: I_B = 20 uA, I_C = 2 mA. Find beta and I_E.
Key Concepts
Transistor current gain
Relevant Formulas
beta = I_C/I_B; I_E = I_B + I_C
Step-by-Step Solution
beta = I_C/I_B = 2e-3/20e-6 = 100. I_E = I_C + I_B = 2.02 mA.
Final Answer
beta = 100; I_E = 2.02 mA
Tips and Tricks
Small base current controls large collector current.
Common Mistakes
Always use SI units. Check energy conservation accounts for all forms.
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