A electron gains electric potential energy as it moves from point 1 to point 2. Which of the following is true regarding the electric potent

Question

A electron gains electric potential energy as it moves from point 1 to point 2. Which of the following is true regarding the electric potential at points 1 and 2?

a. V1 = V2
b. V1 > V2
c. V1 < V2

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RuslanHeatt 6 months 2021-07-17T10:02:45+00:00 1 Answers 24 views 0

Answers ( )

    0
    2021-07-17T10:03:54+00:00

    Answer:

    We know that the change in electric potential energy is defined as:

    q*ΔV = ΔP

    So, the change in the electric potential energy is the charge times the change in the electric potential.

    For the case of an electron gas, we have:

    q = -e

    where -e is the charge of an electron (remember that is negative).

    So, if the electron gains electric potential then:

    ΔP > 0

    this means that the final potential energy is larger than the initial one, then we have:

    -e*ΔV > 0

    This means that ΔV must be negative.

    V₂ = electric potential at point 2, so it is the final electric potential

    V₁ = electric potential at point 1, so it is the final electric potential

    Then we should get:

    ΔV = V₂ – V₁ < 0.

    This means that:

    V₂ < V₁

    The correct option is b.

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