In a power system, two adjacent busses (Bus 6 and Bus 7) are connected through an admittance Y67 = 1.5 - j 10.0 pu. A load flow is performed on the system and it returns the result that V6 =1.02/0. pu and V7 = 0.98 / - 5.0 pu . What current flows from bus 6 to bus 7 ?