Relationships Between Force, Field, Energy, Potential Video Lessons

Concept

# Problem: A proton with an initial speed of 600,000 m/s is brought to rest by an electric field.What was the potential difference that stopped the proton?

###### FREE Expert Solution

Kinetic energy:

$\overline{)\begin{array}{rcl}\mathbf{K}\mathbf{.}\mathbf{E}& {\mathbf{=}}& \frac{\mathbf{1}}{\mathbf{2}}{\mathbf{mv}}^{\mathbf{2}}\end{array}}$

Potential energy:

$\overline{){\mathbf{U}}{\mathbf{=}}{\mathbf{q}}{\mathbf{V}}}$

Where V is the potential, and q is the charge.

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###### Problem Details

A proton with an initial speed of 600,000 m/s is brought to rest by an electric field.

What was the potential difference that stopped the proton?