76. Determine the current strength I3 in resistor R3 and voltage U3 at the ends of the resistor when ε1 = 4, R1 = 2 Ohm, ε2 = 3, R2 = 6 ohms, R3 = l ohms. The internal resistance of the ammeter and current sources neglected.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)