SATHEE: Electrostatics 7 Question 21

Electrostatics 7 Question 21

23. 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).

(2009)

(a) The angular momentum of the charge $- q$ is constant

(b) The linear momentum of the charge $- q$ is constant

(d) The linear speed of the charge $- q$ is constant

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Answer:

Correct Answer: 23. (a)

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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Electrostatics 7 Question 21

23. 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).

Answer:

Solution:

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23. 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).