# What is signal-energy?

What is energy in terms of signal processing? You can read here, that energy is

I just need a simple everyday-example for that energy. And yes, bringing an example like

$x(t)$ representing the potential of an electrical signal propagating across a transmission line

is still too complicated for me.

In the formula you posted, $x(t)$ is a voltage causing electrons to move in a resistance of $1\,\Omega$, and $E_s$ is the energy required to make those electrons move around in the resistor, causing a current to develop.