In the figure below: E1 =18V, E2=12V, E3 =6V, R1=R3=4Ω, R2=8Ω, R4 =12Ω.
a. Find the current in each branch of the circuit (three in total).b. Set up a loop equation for the loop you did not use in your earlier calculations. Then verify your answers to part a. by testing them in the equation.