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Physics- Chapter 21: Electric Fields

LUKE HAS NO WOMEN IN HIS LIFE!?!?
by

Clint Hervert

on 21 April 2010

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Transcript of Physics- Chapter 21: Electric Fields

Electric Fields Are Uber Phat
VOCABULARIO
-Electric Field: The field
that exists around any charged
object. It can produce forces
that transfer energy.

-Electric Field lines: Lines
that provide a picture of
an electric field. Always
point towards the negative.
Never cross and the space
between the line indicates
field strengths.

-Capacitor:Stores charges.

-Equipotential: Whenever the
electic potential difference
is equal to 0.

-Volt: A measure of electric
potential difference. 1 joul
per coulomb. Here is a PHAT link to some cool
electrical field goodness!

http://www.mhhe.com/physsci/physical/giambattista/electric/electric_fields.html Summary:

An Electirc field exists around any charged object. The field produces forces on other charged objects. The electic field is the force per unit charge.
(E= F/q'). The direction of the electric field is the direction of the force on a tiny positive test charge. Electric field lines provide a picture of the elecric field. They are directed away from positive charges and toward negative charges. They never cross, and their density is related to the strength of the field. The first lighthouse to use electricity was the Statue of Liberty in 1886. Summary part 2

Elecctric potential difference is the change in potential enegry per unit charge in an electric field. Electric differences are measured in volts. The electric field between two parallel plates is uniform between the plates, except near the edges. In a uniform field, the potential difference is related to the field strength. Robert Millikan's experiments showed that electric charge is quantized. Robert Millikan also showed that the negative charge carried by an electron is 1.60x10-19 C.
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