Cách sử dụng
A 'volt' is a measure of electrical energy. It is used to describe how strong the electric current is that flows through a wire or a battery. For example, if you plug in your phone to charge, the voltage would be the amount of power that is being transferred from the charger to your phone. The voltage is usually measured in units of volts (V). So, whenever you talk about electricity or any electrical device, you may use the term 'volt'.