JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

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Two charges each ‘Q’ are released when the distance between is ‘d’. Then velocity of each charge of mass ‘m’ each when the distance between them is ‘2d’ is

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Correct option: A

\frac{Q}{{\sqrt {8\pi {\varepsilon _0}dm} }}

Option A (

\frac{Q}{{\sqrt {8\pi {\varepsilon _0}dm} }}

) is correct because it is derived from the conservation of energy, equating initial potential energy to final kinetic and potential energies.

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