Electrostatic Potential Energy and Potential Difference

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Basic Knowledge of Potential Difference

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Electrostatic Potential And Potential Difference.

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Important Questions

How much work is done in moving a charge of across two points having a potential difference of

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In the circuit shown the current through the resistor is amp when the points and are connected to a d.c voltage source. The potential difference between the points and is:

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The work done in bringing a unit positive charge from infinite distance to a point at distance x from a positive charge Q is W. Then the potential at that point is:

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Charges and are placed at points and respectively which are a distance apart, is the midpoint between and . The work done in moving a charge along the semicircle is:

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Two positive point charges are of and are apart from each other. The work done in bringing them closer is

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Two points P and Q are maintained at potentials of of and respectively. The work done in moving electrons from P to Q is equal to

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Figure shows some equipotential lines distributed in space. A charged object is moved from point A to point B.

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The kinetic energy of an electron, which is accelerated in the potential difference of , is

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The dimensional formula of electric potential is given by

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(a) State the relation between potential difference , work done and charge moved.
(b) Calculate the work done in moving a charge of 4 coulomb from a point at volts to another point at volts.

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