This circuit is given:[/B]
What are the values of ε1 and ε3?
The Attempt at a Solution
I get the right answer for ε1 (3V).
But I get that ε3=12V and not 15 (the answer in the textbook).
First the charge from a to b is 3A.
Then I simply use Kirchhoff's second law, which gives: 2Iab-6+10+2-ε3=0.
That gives ε3=12.
Am I wrong or the book? Maybe the charge from a to b is not 3A?
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