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# Electron Accelerating in an Electric Field

EANDM-OBE136

An electron in vacuum experiences an acceleration of $\overrightarrow { a } = 2.0 \times 10^{12} \widehat {y} \frac{ \text m}{\text s^2}$ due to an electric field.

What is the value of the electric field that created this acceleration?

Some useful values: $e = 1.6 \times {10}^{-19} \text C$ and $m_e = 9.1 \times {}10^{-31} \text kg$.

A

$-1.7 \times {10}^{4}\cfrac {\text N}{\text C} \widehat { y}$

B

$-2.2 \times {10}^{18}\cfrac {\text N}{\text C} \widehat { y}$

C

$2.2 \times {10}^{18}\cfrac {\text N}{\text C} \widehat { y}$

D

$-11.4 \cfrac {\text N}{\text C} \widehat { y}$

E

$11.4 \cfrac {\text N}{\text C} \widehat { y}$