With reference to ‘fuel cells’ in which hydrogen-rich fuel and oxygen are used to generate electricity. Consid

Question

With reference to ‘fuel cells’ in which hydrogen-rich fuel and oxygen are used to generate electricity. Consider the following statements:
1. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products.
2. Fuel cells can be used for powering buildings and not for small devices like laptop computers.
3. Fuel cells produce electricity in the form of Alternating Current (AC).
Which of the statements given above is/are correct?

Accepted Answer

Fuel cells, when utilizing pure hydrogen and oxygen, undergo an electrochemical reaction that produces electricity, water, and heat as the primary by-products. This process is highly efficient and can be scaled for various applications, including powering large buildings and small electronic devices. The electricity generated by most fuel cells is Direct Current (DC), which typically requires an inverter to be converted to Alternating Current (AC) for use in standard grids or appliances.