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Question

The combination of two or more cells is called a ____


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Solution

Battery:

  1. A battery is a kind of device that stores chemical energy and converts it to electrical energy.
  2. The combination which consists of two or more cells is called a battery. One or more than one cell is combined and connected electrically in series and has two main terminals: positive terminal and negative terminal.
  3. The chemical reactions occurring in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit.
  4. The flow of electrons causes an electric current that can be used to do work.
  5. All batteries are made up of three basic components: an anode (the negative side), a cathode (the positive side), and some kind of electrolyte (a substance that chemically reacts with the anode and cathode).

There are mainly two types of batteries given below:

  1. Primary batteries are those batteries in which the cell reactions are non-reversible in nature. Therefore, these batteries cannot be recharged.
  2. Secondary batteries are those batteries in which reversible cell reactions take place. Therefore, the reactants in these types of batteries can be regenerated by supplying an electric current to them.

Thus, the combination of two or more cells is called a battery.


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