Question

define electric potential difference

Answer 1

Voltage, electric potential difference, electric pressure or electric tension (formally denoted ∆V or ∆U, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points

Answer 2

Electric potential difference is defined as the work done to bring/ move a unit charge from infinity to the point is called electic potential.
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