We have no clue until we see the drawing. After all, the drawing shows its path.
When an electric current is flowing through a wire, there is a magnetic <em>field</em> produced. The lines of magnetic force are circles around the wire.
Transverse waves travel through a medium and cause particles perpendicular to the direction.
Answer: The forces acting on both of them will increase in magnitude.
Explanation:
According to Coulomb's law, the electrostatic force between two bodies is proportional to the product of their two charges. If the charge on A is increased this product increases in size (it must have been non-zero to begin with, since there was a force between them at first). Thus, the force between them rises.
The ball's maximum potential energy at point-R.
(Potential energy depends on height.)
