In a certain circuit, a transistor has a collector current of 10mA and a base current of 40μA. What is the current gain of the transistor?
Correct answer: C. 250
- A. 150
- B. 200
- C. 250
- D. 300
- E. 350
Explanation
Given: Base current (IB)= 40×10-⁶ ACollector current (IC)= 10×10-³ AFind: Current gain=? Formula: Current gain=IC/IBCurrent gain= 10×10-³/40×10-⁶Current gain= 0.25×10³Current gain=250
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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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