Saint Elmo's fire and normal sparks both can appear when high electrical voltage affects a gas.

They model physical phenomena with electrical voltages and currents as the analog quantities.

This is done using electrical voltage or by high-energy radiation.

This would allow the magnetic measurement to be made in places where high electrical voltages exist.

They ask not about what our electrical voltage is, but whether there is any electricity in our land at all.

This in turn produces small electrical voltages in the coils.

Again the emf is countered by the electrical voltage due to charge separation.

An audio signal is a representation of sound, typically as an electrical voltage.

The electrical voltage forced the hydrogen into the palladium.

This signal is simply an electrical voltage which changes from low to high and back again at regular intervals.