What device generates electricity through a controlled reaction between hydrogen and oxygen?

What device generates electricity through a controlled reaction between hydrogen and oxygen?

• A. Solar Panel
• B. Hydrogen Fuel Cell
• C. Battery
• D. Combustion Engine

Answer: (B)

A hydrogen fuel cell converts chemical energy from hydrogen and oxygen directly into electrical energy through an electrochemical reaction. Hydrogen gas reaches the anode and splits into protons and electrons. The electrolyte lets the protons move to the other side, while electrons travel through an external circuit, producing electricity. At the cathode, electrons, protons, and oxygen combine to form water. This setup provides a steady flow of electricity as long as fuel and oxidizer are supplied, with water being the primary byproduct. This is different from a solar panel, which uses light to create electricity; a battery, which stores and releases energy through internal chemical reactions; and a combustion engine, which converts chemical energy into mechanical work rather than electricity.

A hydrogen fuel cell converts chemical energy from hydrogen and oxygen directly into electrical energy through an electrochemical reaction. Hydrogen gas reaches the anode and splits into protons and electrons. The electrolyte lets the protons move to the other side, while electrons travel through an external circuit, producing electricity. At the cathode, electrons, protons, and oxygen combine to form water. This setup provides a steady flow of electricity as long as fuel and oxidizer are supplied, with water being the primary byproduct. This is different from a solar panel, which uses light to create electricity; a battery, which stores and releases energy through internal chemical reactions; and a combustion engine, which converts chemical energy into mechanical work rather than electricity.