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  • A particle of mass m and charge q is placed at rest in a uniform electric field E and then released, the kinetic energy attained by the particle after moving a distance y, will be -<d

A particle of mass m and charge q is placed at rest in a uniform electric field E and then released, the kinetic energy attained by the particle after moving a distance y, will be -

Option: 1

q^2 \in y


Option: 2

q E y


Option: 3

q E^2 y


Option: 4

q E y^2


Answers (1)

best_answer

we know that the kinetic energy change is equal to work don.
\mathrm{\begin{aligned} w & =\Delta K \cdot E . \\ \Delta K \cdot E & =F \times \text { displacement } \\ & =q E \times y \\ \Delta K \cdot E \cdot & =q E y \quad \text { Ans } \end{aligned}}

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