define potential difference and write it formula
Answers
The potential difference (which is the same as voltage) is equal to the amount of current multiplied by the resistance. ... A potential difference of one Volt is equal to one Joule of energy being used by one Coulomb of charge when it flows between two points in a circuit.
Explanation:
The potential difference (which is the same as voltage) is equal to the amount of current multiplied by the resistance. ... A potential difference of one Volt is equal to one Joule of energy being used by one Coulomb of charge when it flows between two points in a circuit.
Recall that the electric potential is defined as the potential energy per unit charge, i.e. V=PEq V = PE q . ... The equation for the electric potential due to a point charge is V=kQr V = kQ r , where k is a constant equal to 9.0×109 N⋅m2/C2.