Two parallel plates are connected to a battery with a potential difference betwe

Question

Two parallel plates are connected to a battery with a potential difference between the plates of 3 Volts. A small charged particle is placed near one of the plates and released. This particle then moves towards the opposite plate, with the electric field doing work on the particle.[Let Ek be kinetic energy, U be potential energy and W the work done].
Which of the following statements is correct? (Give all CORRECT answers: B, AC, BCD ...)

A) The potential energy of the particle increases
B) The kinetic energy of the particle decreases
C) The total energy (kinetic + potential) of the particle increases
D) ?Ek = -W
E) The kinetic energy of the particle increases

Explanation / Answer

The correct answer is A.

When the charged particle is moved in the direction of opposite plate, the work is done by the field which is stored in the as potential energy. Thus the potential energy of the system increases.

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