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30 April, 17:32

When an electron moves 2.5 m in the direction of an electric field, the change in electrical potential energy of the electron is 8x10-17j. what is the strength of the electric field that causes the change in potential energy?

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  1. 30 April, 18:26
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    In the field of electromagnetism, when two charged plates that are situated opposite to each other by a certain distance, it forms an energy called the electric field. This energy is due to the difference in potential energy with respect to distance. Thus,

    E = V/d

    However, the voltage in volts is energy per coulomb. Thus,

    V = (8x10-17 J/electron) * (1electron/1.60218x10^-19 C)

    V = 499.32 volts

    Therefore,

    E = 499.32 volts / 2.5 m

    E = 199.73 N/C

    The electric field that caused the change in potential energy is equal to 199.73 Newtons per Coulomb.
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