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Electrostatic Potential Energy and Potential Difference

Electrostatic Potential and Capacitance
Physics
Class 12

Overview

Describe Electrostatic potential energy and potential difference. Introduce electrostatic potential energy with analogy to gravitational potential energy. Understand W _RP = P integration R (F. Dr). Introduce potential energy difference. VP - VR = (UP - UR) / q. Understand that potential energy is conservative and potential energy is not a significant value but potential difference is significant. Introduce unit eV and define it. Give its dimension.,Define and calculate energy density of a medium.

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Electrostatic Potential And Potential Difference.

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In the above figure, point is at distance from particle 1 and distance from particle 2 , with both particles fixed in place.
(a) With at infinity, what is at ?
If we bring a particle of charge from infinity to ,
(b) how much work do we do and
(c) what is the potential energy of the three-particle system?

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What is the electric potential at the center of the triangle in figure.

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A unit charge is rotated around a charge of q in a circular path at the distance of r. Then, work done will be:

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Figure shows two parallel surfaces A and B at the same potential, kept at a small distance r from each other. A point charge q is taken from the surface A to B.
The amount of work done is.

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In a non-linear electric field, a charged particle returns to its initial point sometime after it is released in the field. The work done by the field is given by

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Choose the incorrect relation among the following:

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The work done in moving a single positive charge from infinity to a point is called ..... at that point

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A capacitor is charged at the steady rate of . How long will it take to raise the potential difference between the plates of the capacitor to ?

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If the electric potential between two points A and B is and respectively. Then, how much work isdone in bringing a point charge of from point to point ?

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Given that , find the work done in moving a charge from to by taking the path :

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