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18 November, 05:31

An electron traveling horizontally to the right enters a region where a uniform electric field is directed downward. What is the direction of the electric force exerted on the electron once it has entered the electric field?

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  1. 18 November, 07:56
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    Upward

    Explanation:

    For charged particles immersed in an electric field:

    - if the particle is positively charged, the direction of the force is the same as the direction of the electric field

    - if the particle is negatively charged, the direction of the force is opposite to the direction of the electric field

    In this problem, we have an electron - so a negatively charged particle - so the direction of the force is opposite to that of the electric field.

    Since the electric field is directed downward, therefore, the electric force on the electron will be upward.
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