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7 June, 13:43

A uniform electric field, with a magnitude of 650 N/C, is directed parallel to the positive x-axis. If the potential at x = 3.0 m is 1 700 V, what is the potential at x = 1.0 m?

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  1. 7 June, 17:03
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    Given that,

    Electric Field is

    E = 650 N/C

    The potential at x1 = 3 is

    V1 = 1700V

    What is the potential at x2 = 1

    V2 = ?

    Electric potential is given as

    V = Ed

    Then,

    E = V/d

    Therefore, the electric field is gradient of the potential and the position.

    So,

    E = - ∆V / ∆x

    E = - (V2 - V1) / (x2 - x1)

    E = - (V2-1700) / (1-3)

    650 = - (V2-1700) / - 2

    650 * - 2 = - V2 + 1700

    -1300 = - V2 + 1700

    V2 = 1700+1300

    V2 = 3000 V
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