Work Done on Electron in Orbit – Rankers Physics

Potential Energy & Equilibrium: Practice Problem & Solution

Assertion (A): No work is done when an electron completes a circular or an elliptical orbit around the stationary nucleus of an atom. Reason (R): Electrostatic force is a conservative force.  
(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)
(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(3) (A) is true but (R) is false
(4) Both (A) and (R) are false

Solution Explained:

To solve this problem, we apply the core principles of Potential Energy & Equilibrium. Understanding the underlying formula is key to arriving at the correct answer below:

Electrostatic force is a conservative force. For any conservative force, the work done on a particle moving along a closed path is zero. Therefore, both Assertion and Reason are true, and Reason is the correct explanation of the Assertion.

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