# Difference between Electromotive Force and Potential Difference

 Electromotive Force Potential Difference Similarities: Have same unit (Volt) Can be measured by Voltmeter Definition The electromotive force (e.m.f.) is defined as the energy per unit charge that is converted from chemical, mechanical, or other forms of energy into electrical energy in a battery or dynamo. Definition The potential difference (p.d.) between two points is defined as the energy converted from electrical to other forms when one coulomb of positive charge passes between the two points. Symbol: Denote by the symbol, E. Symbol: Denote by the symbol, V