Suppose an electron is released from rest in a region where there is a constant

Question

Suppose an electron is released from rest in a region where there is a constant electric field. Which one of the following statements is correct?

a. The electron accelerates in the direction opposite to the electric field and the associated electric potential energy decreases.

b. The electron accelerates in the direction of the electric field and the associated electric potential energy increases.     

c. The electron accelerates in the direction opposite to the electric field and the associated electric potential energy increases.

Explanation / Answer

a. The electron accelerates in the direction opposite to the electric field and the associated electric potential energy decreases.

Because, F = qE = -(eE) [hence in direction opposite to field]

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