Electric Forces and Fields
Electric field lines show a map of how the attraction or repulsion of a charge acts. The lines show the direction of the force. The arrows show the direction that a positive charge would move. Lines closer together show a stronger field, lines further apart show a weaker field.
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In 1907, Robert Millikan set out to show that charge was contained in elementary units. To see more information about Millikan's experiment click on the picture below to watch the Clickview video.
Some Simulations for Electric Field
Calculations
Electric forces are given by the product of the electric field and the quantity of charge
Electric Force Symbol: F Units: Newtons (N) Electric Field Symbol: E Units: Newtons per Coulomb (N/C) F = qE |
In the region between parallel charged plates, the electric field is uniform. The strength of the field depends on the potential difference between the plates and the distance between the plates.
Electric Field Strength Symbol: E Units: Volts per meter (V/m) Voltage Symbol: V Units: Volts (V) Distance Symbol: d Units: meters (m) |