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Electricity and Magnetism

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Moderate

Superposition of the Electric Field due to Mulitple Charges

EANDM-3BPKIJ

A charge $Q_1 =+3.0 nC$ is placed at the origin and a charge $Q_2 =-0.50 nC$ is placed at $x = 12 cm$.

Created for Albert.io. Copyright 2016. All rights reserved.

What is the electric field further along the $x$-axis at $x=20 cm$?

A

$1378 \cfrac {N}{C}$ along the x-axis.

B

$-1378 \cfrac {N}{C}$ along the x-axis.

C

$0 \cfrac {N}{C}$.

D

$+28 \cfrac {N}{C}$ along the x-axis.

E

$-28 \cfrac {N}{C}$ along the x-axis.