Two parallel wires carry a current I in the same direction. Midway between these wires is a third wire, also parallel to the other two, which carries a current 0.5 I, but in the direction opposite from the first two wires. In which direction are the net forces on the outer wires?
a. Since the net forces are zero, there is no direction.
b. Both forces are toward the center wire.
c. Both forces are away from the center wire.
d. Both forces on the two wires are in the same direction in space.
a
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