I contacted him by electronic mail.

The battery of my smartphone has run out.

The battery of my smartphone has run out.

In this area, electric power generation using solar energy is being carried out.

The light bulb in the room has burned out.

The gearing of this bicycle is very smooth.

This machine takes energy from the power source and operates by transmitting it.

This electric wire is an excellent conductor, transmitting electricity efficiently.

A large amount of electric current is flowing through this power line.

In this experiment, energy is measured in electron volts.