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6 May, 09:48

A test charge of - 1.4 * 10-7 coulomb experience a force of 5.4 * 10^-1 Newtons. calculate the magnitude of the electric field created by the negative test charge.

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  1. 6 May, 10:16
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    Charge (q) = - 1.4 x 10^-7 Coulombs

    Force (F) = 5.4 x 10^-1 Newtons

    Electric Field (E) = ?

    Force = Charge x Electric Field

    F = |q| x E

    E = F / |q|

    E = Newton/Coulomb < - Electric Field Unit

    -> E = 5.4 x 10^-1 / |-1.4 x 10^-7|

    -> E = 5.4 x 10^-1 / 1.4 x 10^-7

    -> E = 3.857 x 10^ (-1 - (-7))

    -> E = 3.86 x 10^ (-1+7)

    -> E = 3.86 x 10^6 N/C

    Answer: The magnitude of the electric field created is 3.86 x 10^6 N/C.
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