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A positive point charge +Q is fixed in s...

A positive point charge `+Q` is fixed in space. A negative point charge `-q` of mass `m` revolves around fixed charge in elliptical orbit. The fixed charge `+Q` is at one focus of the ellipse. The only force acting on negative charge is the electrostic force due to positive charge. Then which of the following statement is true

A

The angular momentum of the charge `-q` is constant

B

The linear momentum of the charge `-q` is constant

C

The angular velocity of the charge `-q` is constant

D

Thelinear speed of the charge `-q` is constant

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The correct Answer is:
A
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