A $-2\mathrm{.}0$ nC charge and a $2\mathrm{.}0$ nC charge are located on the $x-$axis at $x=-1\mathrm{.}0$ cm and $x=+1\mathrm{.}0cm,$ respectively.

Part A

At what position or positions on the $x-$axis is the electric field zero?

$x=-2\mathrm{.}0cm$

$x=+-$

$x=+2\mathrm{.}0cm$

$x=0$

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Part B

At what position or positions on the $x-$axis is the electric potential zero?

$x=+2\mathrm{.}0cm$

$x=+$

$x=-2\mathrm{.}0cm$

$x=0,+-$

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