Question

combination of two or more cells is called

Answer 1

Battery 
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combination of 2 or more cells is called the battery 


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1) positive side called the cathode


2) negative side called the anode

3)  When the battery is connected to power, chemical reactions take place

Answer 2

Battery. It is a collection of cells whose chemical reactions result in the flow of multiple electrons in circuits. Each battery consists of a positive side called the cathode and a negative side called the anode.

Also, it contains a unique electrolyte. When the battery is connected to power, chemical reactions take place somewhere between the electrolyte and anode.