Final answer:
The direction of the magnetic field at an equidistant point from two wires can be found using the right-hand rule and vector addition, with the net field depending on the direction of the currents in the wires.
Step-by-step explanation:
To find the magnitude and direction of the magnetic field at a point equidistant from the wires, you must apply the principles of magnetism as well as vector addition. Each current-carrying wire generates a magnetic field that circulates around the wire according to the right-hand rule. At the equidistant point, the magnetic fields from each wire will contribute to the total field. Using the right-hand rule, you determine the direction of the field due to each wire and then apply the rules of vector addition to find the net field vector.
For example, if you have two parallel wires carrying currents in opposite directions and you are looking for the magnetic field at a point exactly in the middle, the magnetic fields due to each wire will be in opposite directions at that point. Thus, when you sum them using vector addition, the fields due to each of the wires will cancel each other, resulting in a net magnetic field of zero. If the currents were in the same direction, the magnetic fields would be perpendicular to the wire and could be added vectorially to find the net magnetic field at the point.