Two straight parallel wires carry currents of `200 mA` and `1A` in opposite direction. If the wires are `20cm` apart, the distance of the neutral point from the `1A` wire is `(` in cm )

Two parallel wires carry currents of 20A and 40A in opposite directions. Another wire carrying a current antiparallel to 20A is placed midway between the two wires. The magnetic force on it will be