The electric battery is device consisting of one or more electrochemical cell with external connections provided to power electrical devices such as flashlights, smartphones, and electric cars. when a battery is supplying electric power. Its a positive terminal is the cathode and it’s a Negative terminal is the anode.
The terminal marked negative is the source of electrons that when connected to an external circuit will follow and deliver energy to an external device. when a battery connected to an external circuit.
The term Battery specifically referred to a device composed of multiple cells however the usage has evolved additionally to include device composed of a single cell.
What is the Electrochemical cell?
EC is a device capable of either generating electrical energy from chemical reactions or using electrical energy to cause chemical reactions. The electrochemical cells which generate an electric current are called voltaic cell or galvanic cell and the other ones are called electrolytic cells which are used to drive chemical reactions like electrolysis.
What is a Cathode?
A cathode is an electrode from which a conventional current leaves a polarized electrical device. A conventional current describes the direction in which positive electron charge move. The electron has a negative electrical charge so the movement of electrons is opposite to that of the conventional current flow.
What is an Anode?
An anode is an electrode through which the conventional current enters into a polarized electrical device. This contrasts with a cathode an electrode through which conventional current leaves an electrical device.
The Electric batteries convert energy directly to electrical energy, Battery consists of some number of voltaic cells. Each cell consists of two half sell connected in series by a conductive electrolyte containing anions and cations.
The Battery classified Primary and secondary.
The Primary batteries are designed to used until exhausted of energy then discarded.
The secondary batteries are can be recharged that is they can chemical reactions reversed by applying electric current to the cell.
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