What is a Battery?
Batteries stores energy as chemical energy and releases it as electric energy. Chemical reactions in a battery create an electric current. While the types, sizes and combination of chemicals vary, batteries and divided into two main classes- primary batteries and secondary batteries. Primary batteries can’t be recharged while secondary batteries can however, they store more than secondary batteries. Secondary batteries can be used in devices such as mobile phones, computers and vehicles.
How do batteries work?
Electric currents consists of tiny particles called electrons. Electrons usually form part of atoms. A battery works by separating electrons from atoms in the battery’s material and “pushing” them into an electric circuit. A circuit is a looping path through which electric current travels. The flow of electrons through the circuit forms a current. Battery powered devices change the electric energy of the current into other useful forms of energy such as light, sound and motion. The anode, which is generally marked with a minus sign (-) releases electrons into the circuit. The electrons flow around the circuit powering any connected devices. The electrons reenter the battery through the second second electrode, the cathode. It is marked with a plus sign (+).
An atom consists of a nucleus(core) surrounded by electrons. Nucleus particles called protons have positive charges while electrons have negative charges.
A battery consists of one or more