HOW CAN I APPLY THE NORTON'S THEOREM IN FINDING THE VOLTAGE ACROSS R3 WITH THE FIGURE GIVEN IN THE "Nodal Analysis Circuit".
http://www.allaboutcircuits.com/vol_1/chpt_10/4.html
Find the voltage across R3 using Nortons Theorem.
http://www.allaboutcircuits.com/vol_1/chpt_10/4.html
Find the voltage across R3 using Nortons Theorem.