Q19:The two wires shown in Figure P30.19 are separated by d =cm and carry currents of I = A in oppo- site directions. Find the magnitude and direction of the net magnetic field
(a) at a point midway between the wires;
(b) at point P1, cm to the right of the wire on the right; and
(c) at point P2, 2d = 20.0 cm to the left of the wire on the left.
pi =
g =
u =