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    Current And Power Dissipation

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    Circuit is attached

    (a) Calculate the value of the current through the 12 V battery shown in
    FIGURE 3.
    (b) Calculate the power dissipated in R1, R2 and R.

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    Solution Preview

    Let us assume current through R be I3 and comping out of battery of 12 V, i.e., all 3 currents are incident towards a junction.


    E1 = 13 V
    E2 = 14 V
    E3 = 12 V

    R1 = 1 ohm
    R2 = 2 ohm
    R = 3 ohm

    At one of the two junctions, by Kirchhoff's current law (KCL),

    I1 + I2 + I3 = 0 ...(1)

    For closed ...

    Solution Summary

    In a given electric circuit, by using Kirchhoff current and voltage law, currents are estimated in associated resistances. Also, power dissipation in the resistances are estimated.