(i) Sketch a rough graph to show the variation of the magnitude of electrostatic force F between two fixed point charges with their separation r (for r > 0).
(ii) From the graph, state the behaviour of F as r → 0 and as r → ∞.
a. (i) Sketch a rough graph to show the variation of the magnitude of electrostatic force F between two fixed point charges with their separation r (for r>0).
b. (ii) From the graph, state the behaviour of F as r→0 and as r→∞.