1 Electric Potential AP.ppt - -Electric Potential Energy-Electric Potential AP Physics C Mrs Coyle Gravitational Potential A Energy Higher Potential

1 Electric Potential AP.ppt - -Electric Potential...

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-Electric Potential Energy -Electric Potential AP Physics C Mrs. Coyle
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Gravitational Potential Energy Higher Potential Energy Lower Potential Energy U A->B = U B -U A = - W field A B
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Consider a positive test charge in the following electric field. Higher Potential Energy Lower Potential Energy + U A->B = U B -U A = - W field A B
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Electric Potential Energy When a point charge q o is in an electric field E: The force from the field is F=q o E The work that the force of the electric field does to move the charge from point A to B (in the direction of the field) is W=Fd As the charge is moved by the electric force it loses potential energy but gains kinetic energy.
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Change in Electric Potential Energy Change in Electric Potential Energy (Final PE- Initial PE) U A->B = U B -U A = - W field The (  sign ( - W field ) indicates the loss of potential energy when the charge moves in the direction of the field.
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The Electric Force is Conservative The force, F = q o E, caused by the electric field and experience by the charge is conservative . That is: The work done by the conservative force does not depend on the path taken.
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