A positive point charge +Q is fixed in space. A negative point charge q of mass m revolves around the fixed charge in an elliptical orbit. The fixed charge +Q is at one focus of the ellipse. The only force acting on the negative charge is the electrostatic force due to the positive charge. Then which of the following statements is true?ALinear momentum of negative point charge is conserved.BAngular momentum of negative point charge about the fixed positive charge is not conserved.CAngular momentum of negative point charge about the fixed positive charge is conserved.DAngular velocity of the charge q is conserved about +Q charge.

Adarsh Pal , 4 Years ago

Grade 12