Answer Happy

Two wires, both with current out of the page, are next to one another. The wire on the left has a current of 1 A and the wire on the right has a current of 2 A. We can say that: The left wire repels the right wire and exerts as much force as the right wire does. The left wire attracts the right wire and exerts twice the force as the right wire does. The left wire repels the right wire and exerts half the force as the right wire does. The left wire repels the right wire and exerts twice the force as the right wire does. The left wire attracts the right wire and exerts half the force as the right wire does. The left wire attracts the right wire and exerts as much force as the right wire does.
An oil slick (noil = 1.4) on glass (ngl = 1.5) is reflecting concentric rings of colors. What is the difference in thickness between two concentric rings where light of wavelength 600 nm (yellow) is being maximally reflected? 250 nm 200 nm 300 nm 50 nm 150 nm 100 nm