When two electric currents collide, such as those flowing in opposite directions in a wire, they can interact based on electromagnetic principles. If currents are induced by moving magnetic fields, one current may flow to the left while the other flows to the right. According to Maxwell's equations, the collision of these currents results in their densities summing to zero, effectively canceling each other out. In practical terms, this could lead to a buildup of electrons in the space between the two opposing currents. The overall effect is a complex interaction rather than a simple collision.