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## Homework Statement

For this circuit, I'm fairly confused with the extra battery. I need to find the Voltages at A (Between 5V Battery and 270 resistor), B (Between 5V Battery and 1k resistor), C (Intersection between 270, 220 and 680 resistors), E (in between 220 and 330 resistor) and F(Between 330 and 470 resistor)

I then need to find the potential difference between (using above locations): B and C, G (Between 680 resistor and 3V Battery) and A, G and F, B and G.

Finally, I need to find the currents of I1(going through point A), I2 (going into Point G) and I3 (going near point E).

**2. The attempt at a solution**

I wasn't really sure how to solve this mathematically due to the Extra Battery. So any good tutorial on how to do this would be appricated. I used Yenka Modelling Software to build the circuit the measure the currents / voltages. I got the following:

Potentials:

A: 3.09V

B: -1.91V

C: 2.58V

E: 2.02V

F: 1.19V

I1 = 1.91mA

I2 = 0.062mA

I3 = 2.53mA

However they look wrong :(

Thanks!