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? A Linear momentum of negative point charge is conserved. B Angular momentum of negative point charge about the fixed positive charge is not conserved. C Angular momentum of negative point charge about the fixed positive charge is conserved. D Angular velocity of the charge q is conserved about + Q charge.

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?

A

Linear momentum of negative point charge is conserved.

B

Angular momentum of negative point charge about the fixed positive charge is not conserved.

C

Angular momentum of negative point charge about the fixed positive charge is conserved.

D

Angular velocity of the charge q is conserved about +Q charge.