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## Homework Statement

What must the emf ε in the figure be in order for the current through the 7Ω resistor to be 1.79A ? Each emf source has negligible internal resistance.

## Homework Equations

V=IR

Kirchoffs junc and loop rules

## The Attempt at a Solution

I put that the outer loop would be 24V +3*I = 7*1.79

and from there solved for I

i got that I would be -5.02A

I then said that because the current I split at the top middle junc the current I{2} down the centre line was I{2}=I-I{1}

and basically used V=IR to solve for ε which i got to be -13.62V

but i cant help but feel I've done it wrong, and in the text book there is no answers can anyone help? much appreciated