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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
(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.