1.16 (a) Find VN, UP, and vo in the circuit of Fig. P1.16. (b) Repeat (a) with a 5-k resistance connected between A and B. 1 mA (4 A 3 ΚΩ 4 ΚΩ м м VN Vo Vp + м B 2 ΚΩ 1 ΚΩ