If the sun and the planets carried huge amounts of opposite charges

Options

A. all the three Kepler's laws would still be valid
B. only the third law will be valid
C. only the second law will be valid
D. the first law will still be valid

Answer

A

Explanation

Due to huge amounts of opposite charges on the sun and the planet, there is a very large electrostatic force of attraction. Similarly gravitational force is also an attractive force. Both these should be added. Both (gravitational and electrostatic) force are central forces and obey invers square law. Hence all the three Kepler's laws will be applicable (valid).