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Under the influence of the coulomb field of charge +Q , a charge -q is moving around it in an elliptical orbit. Find out the correct statement(s).

Options

  1. AThe angular momentum of the charge -q is constant
  2. BThe linear momentum of the charge -q is constant
  3. CThe angular velocity of the charge -q is constant
  4. DThe linear speed of the charge -q is constant

Correct answer

A. The angular momentum of the charge -q is constant

Step-by-step solution

Net torque on (-q ) about a point (say P ) lying over +Q is zero. Therefore, angular momentum of (-q) about point P should remain constant.

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