Question

    A positive charge is initially at rest and then allowed

    to move freely in a region where there is a uniform electric field. What happens to its electric potential energy as it begins to move?
    A It stays the same since the electric field is uniform Correct Answer Incorrect Answer
    B It goes up as the charge travels in the direction of the electric field Correct Answer Incorrect Answer
    C It goes down as the charge travels in the direction of the electric field Correct Answer Incorrect Answer
    D It goes down as the charge moves against the direction of the electric field Correct Answer Incorrect Answer

    Solution

    When a positive charge is released from rest in a uniform electric field , it experiences a constant force in the direction of the field and begins to accelerate. As it moves, it loses electric potential energy because it is moving from a region of higher electric potential to lower electric potential . This decrease in potential energy is converted into kinetic energy, in accordance with energy conservation.

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