write the expression for coloumb's law
define electrostatic potential
how can we measure the potential difference across a the needs of conductor
how does the resistance of a wire vary with its cross-sectional area
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Coulomb's law expression F = km1m2/ square of distance
Electric potential is defined as the amount if work done in moving a unit charge from infinity to that point against electric forces.
resistance is directly proportional to length of the wire and is inversely proportional to its area of cross section.
Electric potential is defined as the amount if work done in moving a unit charge from infinity to that point against electric forces.
resistance is directly proportional to length of the wire and is inversely proportional to its area of cross section.
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You're welcome jeffjoshna
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