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  1. The figure shown below is designed to act as a constant current source across the load resistor. The β of transistor is 50. What is the value of load current?

    2. A.
    1.96 mA
    B.
    2 mA
    C.
    2.04 mA
    D.
    None

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    Answer : Option A

    Explanation :

    Voltage at base = 12 - 5 = 7 v

    Voltage at emitter = 7 + 0.7 = 7.7 v

    Current through R1 = 2 mA

    Thus current through load = = 1.96 mA.

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