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  1. The Vs is given by

    2. A.
    8 V
    B.
    13 V
    C.
    1 V
    D.
    4 V

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    Answer : Option B

    Explanation :

    Using Nodal analysis

    ...(i)

    ...(ii)

    ∴ V2 = 2Vx

    ∴ V2 = 2V ...(iii)

    ...(iv)

    Put V2 = 2V

    Put in equation (iii), Vs = 3V1 - V2

    Vs = 3 x (+5V) - 2V

    Vs = 15V - 2V = 13V.

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