Atest 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.

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

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

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