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Explain the formation and uses of battery.

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Explain the formation and uses of battery.

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A combination of two or more cells connected together is called a battery. It supplies electric current. It is formed by connecting the positive terminal of one cell to the negative terminal of another. To identify the positive and negative terminals, they are denoted as + and –, respectively. These batteries are used in many devices, such as torch lights, mobile phones, calculators and even automobiles.

 

लेंस सूत्र और आवर्धन। पर टिप्पणी लिखे ? Comment on Lens formula and magnification.

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