Transistor current gain β = I_C/I_B. Typical value range:
A. 20-200
B. 1000-5000
C. 1-10
D. 0.1-1
Answer: Option A
Solution (By JKSSB Mock Tests)
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.
Explanation:
A rocket works on the principle of conservation of linear momentum. As the exhaust gases are expelled downward at high velocity, they carry downward momentum. To conserve the total momentum of the system (which is initially zero), the rocket must acquire an equal and opposite (upward) momentum, propelling it forward.
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