electric potential 2
TRANSCRIPT
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Electric Potential
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Energy
Capacity to do work
Remember
thisFormula.
Somerepresentation
mightchange
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If gravitational potential is a
means of rating various locations
within a gravitational field in terms
of the amount of potential energy
per unit of mass, then theconcept of electric potential must
have a similar meaning.
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Consider this set-
up
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The amount of force involved in
doing the work is dependent
upon the amount of charge
being moved
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As the monkey does work on the positive charge, he
increases the energy of that charge. The closer he brings
it, the more electrical potential energy it has. When he
releases the charge, work gets done on the charge which
changes its energy from electrical potential energy to
kinetic energy.
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Electric Potential energy depends:
1) Electric charge - a property of the object
experiencing the electrical field, and
2) Distance from source - the location
within the electric field
How is this the same
with the Gravitational
Potential?
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Electric Potential Energy
In order to bring two like charges near
each other work must be done. In
order to separate two oppositecharges, work must be done.
Remember that whenever work gets
done, energy changes form.
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Electric Potential Energy
defined as the capacity for
doing work which arises from
position or configuration.
In the electrical case, a charge
will exert a force on any othercharge and potential energy
arises from any collection of
charges
http://hyperphysics.phy-astr.gsu.edu/Hbase/electric/wcon.htmlhttp://hyperphysics.phy-astr.gsu.edu/Hbase/electric/wcon.html -
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Electric Potential Energy
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Work done
Change Wto U to
representElectricPotential
Energy
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Electric Potential
U=Potential EnergyQ=charge
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Questions
1. The quantity electric potential is defined
as the amount of _____.
a. electric potential energy b. force acting
upon a charge
c. potential energy per charge
d. force per charge
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