This is done using electrical voltage or by high-energy radiation.
AC can use high voltages with smaller current to reduce losses when you send power.
And you use high voltage to do that.
Electronic circuits usually use low voltage direct current sources.
Overheating and damage to circuits can occur very quickly when using high voltages.
Analog signals can use voltage or current with a magnitude proportional to the value of the process signal.
Third rail systems using lower voltages than overhead systems still require many more supply points.
Conductive sensors are extremely safe because they use low voltages and currents.
Power companies save a great deal of money this way, using very high voltages to transmit power over long distances.
To alter a liquid significantly, researchers had to use so much voltage that the experiments short-circuited.