The device which converts chemical energy of fuels directly into electrical energy is
- Aconcentration cell
- Bgalvanic cell
- Cfuel cell
- Dboth (b) and (c)
- ENone of the above/More than one of the above
Show answer and explanation
Correct answer: (c) fuel cell
Explanation
A fuel cell turns the chemical energy of a fuel directly into electricity. In the hydrogen–oxygen fuel cell, hydrogen and oxygen combine at the electrodes and the only by-product is water.
Unlike a battery, a fuel cell does not store energy: it runs as long as fuel is supplied. Fuel cells powered the Apollo spacecraft and are used in hydrogen vehicles.