I really need help. I actually don't know how to do this
Use Kirchoff's rules to determine I1, I2 and I3 for the following circuit:
Circuit figure
https://chip.physics.purdue.edu/protected/Prelab221img/e4pp2.jpg
E1 = emf = 9 V
r = internal resistance = 1.5
R1 = 5
R2 = 15
R3 =...