I just want to shift to another country to learn like London so who can tell me the progress

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.