What energy does a battery convert to electrical energy?

• A. Converts chemical energy to electrical energy
• B. Stores chemical energy in chemical form
• C. Converts electrical energy to chemical energy
• D. Generates magnetic fields

Answer: (A)

A battery stores energy chemically and, when delivering power, converts that chemical energy into electrical energy. Inside the cells, chemical reactions push electrons through the electrodes, creating an electric current in the external circuit. This is the energy transformation: chemical energy becomes electrical energy that can do work in a device. The storage aspect is chemical energy in the cells, not the conversion itself, and charging reverses the process by using electrical energy to form chemical energy again. Magnetic fields can arise from the current, but they are only a byproduct, not the energy being converted.