Q:       Determine the value of voltage V₀ .

Solution:    We  need to calculate V₀ .

                                    It is given

                                                             I₂ = 2 mA

                        Applying KVL for mesh 1

                                                 3kI₁ + 6k (I1 - I2) -12 = 0

                                                           9kI₁ - 6kI₂ = 12

                                                          9kI₁ - 12 =12

                                                                     I₁ = 8/3 mA

            Voltage across 6k resistor will be

                                                 V = 6k( I₁ - I2)

                                                   = 6k(8/3 - 2 ) = 4 V

                        Since current by 2k resistor will be

                                                                I₂ = 2mA

                                    Voltage across 2k = 2k x 2mA

                                                              = 4 V

                                                V₀   = V - V₂k

                                                        = 4 - 4

                                                      = 0