How do batteries store electricity?
Unlike heat, electricity cannot be stored until it is needed. Instead, it has to be made. Batteries make electricity by using chemical reactions. In a battery, the reaction creates a charge at its negative terminal, so that it is ready to produce a current. As soon as you switch on, the battery drives electrons around the circuit. It can keep the electrons moving until its supply of chemicals is used up, and it goes flat.

Harmless shocks
Static electricity builds up in houses, cars and clothes, and can sometimes give you a shock. These shocks can measure up to 50 000 volts, but they involve few electrons and are not nearly as dangerous as ones from a household electricity supply.

Tag :batteries
Tag :static electricity