Battery is defined as:

Battery is defined as:

• A. A device that stores energy electromagnetically
• B. A unit of electrical current
• C. A safety device for circuits
• D. A device that converts chemical energy to electrical energy

Answer: (D)

A battery stores energy in chemical form and converts that chemical energy into electrical energy when it’s connected to a circuit. This conversion happens through electrochemical reactions inside the cell that push electrons from the negative to the positive terminal, producing current to power devices. The other statements describe a capacitor (which stores energy electromagnetically), a unit of current, and a safety device, none of which define what a battery does.

A battery stores energy in chemical form and converts that chemical energy into electrical energy when it’s connected to a circuit. This conversion happens through electrochemical reactions inside the cell that push electrons from the negative to the positive terminal, producing current to power devices. The other statements describe a capacitor (which stores energy electromagnetically), a unit of current, and a safety device, none of which define what a battery does.