Q30.A transistor is used in common-emitter mode in an amplifier circuit. When a signal of 10 mV is added to the base-emitter voltage, the base current changes by 10μA and the collector current changes by 1. 5 mA . The load resistance is 5kΩ . The voltage gain of the transistor will be _____ .
What This Question Tests
This question tests the calculation of voltage gain for a common-emitter transistor amplifier by first determining current gain and input resistance from given changes in base and collector currents and base-emitter voltage.
Concepts Tested
Formulas Used
β = ΔI_C / ΔI_B
A_v = β * (R_L / R_in)
R_in = ΔV_BE / ΔI_B
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📋 Question Details
- Chapter
- Semiconductor
- Topic
- Transistor Amplifier (CE Mode)
- Year
- 2022
- Shift
- 24 Jun Shift 1
- Q Number
- Q30
- Type
- Numerical
- NCERT Ref
- Class 12 Physics Ch 14: Semiconductor Electronics
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