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A transistor is used in a common-emitter mode in an amplifier circuit. When a signal of 20 mV is added to the base-emitter voltage, the base current changes by 20 µA and the collector current changes by 2 mA. The load resistor in 5 k $Ω$ . What is the value of $β$ ?

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detailed solution

Correct option is B

β=ΔIcΔIb=2mA20μA=2×10−320×10−6=100

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A transistor is used in a common-emitter mode in an amplifier circuit. When a signal of 20 mV is added to the base-emitter voltage, the base current changes by 20 µA and the collector current changes by 2 mA. The load resistor in 5 kΩ. What is the value of β?

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A transistor is used in a common-emitter mode in an amplifier circuit. When a signal of 20 mV is added to the base-emitter voltage, the base current changes by 20 µA and the collector current changes by 2 mA. The load resistor in 5 k $Ω$ . What is the value of $β$ ?