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2

## What is the purpose of coulombs law? Whats the equation?

- it gives the force between 2 point charges.
- F= kq1q2/r^2

3

## Whats the equation for an electric field made by a single point charge? Units?

E= kq2/r^2
units: either N/C or V/m

4

## What is voltage? whats the equation for voltage in an electric field?

-voltage is the same thing as potential. Similar to gravitational PE= mgh.:
-potential of an electric field: PE= qV

5

## What is the equation for the voltage of a point charge? what are the units?

E= kq1/r
units: V or J/C

6

## What are the units for potential?

- volts or J/C

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