JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

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A body of mass M and charge q is connected to a spring of spring constant k. It is oscillating along x-direction about its equilibrium position, taken to be at x = 0, with an amplitude A. An electric field E is applied along the x-direction. Which of the following statements is correct?

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Correct option: A

The total energy of the system is

\frac{1}{2} m \omega^2 A^2+\frac{1}{2} \frac{q^2 E^2}{k}

Option A is correct because the total energy includes the potential energy due to the spring and the additional potential energy due to the electric field's effect on the charge.

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