Determine the magnitude of the net current passing through unit area ( A/m?). At a point high in the Earth's atmosphere, He2+ Express your answer using two significant figures. ions in a concentration of 2.5 x 1012/m are moving due north at a speed of 2.0 x 10 m/s. Also, a 7.0 x 1011/m concentration of O, ions AED ? is moving due south at a speed of 6.1 x 10 m/s. A A/m2 Submit Request Answer Part B Determine the direction of the net current. South West