Two parallel wires carry equal currents in the opposite directions. point a is midway between the wires, and b is an equal distance on the other side of the wires. what is the ratio of the magnitude of the magnetic field at point a to that at point b?

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

a skateboard rolling across the street - apex