Q&A/Class 7/Science

Explain the formation and uses of battery.

Class 7CBSEScienceChapter: Electric Current and its Effects
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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.

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