Point P is midway between two long parallel straight wires that run north-south in a horizontal plane. The distance between the wires is 1 cm. Each wire carries a current of 1 A toward the north.
a) find the magnitidue and direction of the magnetic field at point P.
b)repeat a but assume the current in the wire on the east side runs towards the south instead.
The Attempt at a Solution
Okay, so for a), this is what I did.
I drew a diagram and concluded at point P there would be two magnetic fields due to the two electrical wires, that are equal and opposite in direction.
So the answer is 0.
b) drew another diagram and concluded the same thing. The answer is 0.
Is that the proper way to approach a question like this?