Multiple choice general knowledge science & technology

Solar cells are simple photovoltaic devices that convert solar energy directly into electricity and are manufactured from the second-most abundant element in the earth’s crust. Name it.

  1. Bauxite

  2. Silicon

  3. Calcium

  4. Magnesium

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Silicon is the second most abundant element in Earth's crust (about 28% by mass) after oxygen. Solar cells, or photovoltaic cells, are primarily made from silicon due to its semiconductor properties. Bauxite is an aluminum ore, while calcium and magnesium are metals not used in photovoltaic applications.