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- Homework Statement:
- In the circuit below, the output is 23 W across the resistor with the resistance 6 Ohm. Calculate the amount of current in all parts of the circuit as well as the polarity and EMF ε of the unknown battery.

- Relevant Equations:
- Basic formulas for electric circuits

In the circuit below, the output is 23 W across the resistor with the resistance 6 Ohm. Calculate the amount of current in all parts of the circuit as well as the polarity and EMF ε of the unknown battery.

Circuit:

My attempt:

I get 6 unknowns with 5 equations. I don't know how to find the last equation.

Thanks in beforehand!

Circuit:

My attempt:

I get 6 unknowns with 5 equations. I don't know how to find the last equation.

Thanks in beforehand!