Science:Math Exam Resources/Courses/MATH152/April 2016/Question A 25/Statement

Questions A25 and A26 concern the circuits above. In the left diagram, $I$ is the current through the current source and $E$ is the voltage across it, to be determined.

A25: For the left circuit above with two voltage sources and one current source write the one linear equation that matches the loop currents to the current source.