What is Battery ? Give one example each of primary battery and secondary battery.

Explanation

### Step-by-Step Text Solution:

**Step 1: Definition of a Battery**
A battery is a device that stores chemical energy and converts it into electrical energy. This conversion occurs through chemical reactions that involve the flow of electrons from one material to another through an external circuit.

**Step 2: Explanation of How a Battery Works**
The flow of electrons in a battery generates electric current, which can be utilized to perform work. The chemical reactions within the battery are responsible for this electron flow, enabling the battery to provide power to various devices.

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