Tendency for charges to flow depends on electric energy per charge {voltage}| {potential difference}. Higher potential is positive and attracts negative charge. If two points have potential difference and path exists, charge flows from one point to the other.
energy
Because field is electric force F divided by charge q, voltage V is electric field H times distance ds moved in field direction: V = H * ds = (F/q) * ds = (F * ds) / q = W/q, where W is electric energy. Voltage is electric energy divided by charge.
field
Separating charges using work creates electric field, with voltage between charges. Batteries separate charges to create voltage. Electromagnetic induction creates voltage by separating charges. Voltage V equals area A times negative of field change dH divided by time change dt: V = A * -dH / dt. Voltage V equals negative of inductance I times current change di divided by time change dt: V = -I * di / dt.
Physical Sciences>Physics>Electromagnetism>Energy
5-Physics-Electromagnetism-Energy
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Date Modified: 2022.0224