Finding the Current in a circuit, with series opposing voltage sources.

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To find the current in a circuit with series opposing voltage sources, the analysis involves considering two scenarios: when the switch is open and when it is closed. With the switch open, the current can be calculated directly from the voltage sources and resistances. When the switch is closed, the circuit forms two loops, requiring the application of Kirchhoff's rules to determine the currents accurately. It's essential to show attempts at solving the problem to facilitate assistance. Understanding these principles is crucial for correctly analyzing circuits with opposing voltage sources.
Killstudy
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Homework Statement


asd.png

V1-12V
V2-9V
R1-4 Ohms
R2-7 Ohms
R3-8 Ohms

Each current has to be found when the switch (k) is both open and closed.

Homework Equations


The Attempt at a Solution



I can find each current when the switch is open, however I'm confused at what would happen when it becomes closed.
 
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Hi Killstudy, welcome to PF. I hope your studies do not kill you.

The forum rules here says that you need to show your attempts for solving the problem. How did you solve the case with open switch?

If the switch is closed you have two loops and need to use Kirchhoff' rules.

ehild
 

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