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AP® Physics C: E & M

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Difficult

$E$ Field from Potential

APPHEM-LJ4OTL

The potential in a particular region is given by the formula $V=8x^{2}$. What is the electric field in this region?

A

$8x$

B

$16x$

C

$-8x$

D

$-16x$

E

$0$