EARTH SCIENCE
MAGNETISM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Dr. Eriksson is working on a material called selenium. She is adding a certain number and type of atoms to the selenium, which will control its conductivity.Selenium is most likely what kind of material?
|
|
semiconductor
|
|
|
conductor
|
|
|
superconductor
|
|
|
insulator
|
Explanation:
Detailed explanation-1: -She is adding a certain number and type of atoms to the selenium, which will control its conductivity. Selenium is most likely what kind of material? semiconductor.
Detailed explanation-2: -Unlike sulfur, selenium is a semiconductor, meaning that it conducts some electricity, but not as well as conductors. Selenium is a photoconductor, which means it has the ability to change light energy into electrical energy.
Detailed explanation-3: -Although classified as a nonmetal, selenium does conduct electricity if exposed to light. In darkness, the material is, effectively, an insulator. As light intensity rises, its conductivity (1/resistivity) rises proportionally.
There is 1 question to complete.