A Principle of Great Importance: The only way you can have a "chunk" or finite amount of energy to dissipate in a circuit as work is to first have a potential's local energy density interact with a local finite mass collector. The normal interacting mass collector is the free electrons (the free electron gas) in the circuit. You can have, e.g., (joules/coulomb x coulomb); (joules/gram x grams); (joules/m3 x m3); etc. [Bearden, The Final Secret of Free Energy]
See Also
Antenna
charging mass
Conductor
chord of the mass
discharging mass
doubly charged mass
negatively charged mass
positively charged mass