A lab has a new material they must test in order to determine its ...

[karateprodigy]

A lab has a new material they must test in order to determine its nature. Which test will determine whether the substance is a conductor, insulator, or semiconductor?
  1.A potential difference is applied; if the material conducts, it is a conductor.
  2.A potential difference equivalent to 1 eV is applied; if the material conducts, it is a semiconductor.
  3.An infinitesimal potential difference is applied to the material; if it doesn't conduct, it is an insulator.
  4.A potential difference is applied to the material, beginning with a very small one and increasing to values equivalent to 5 eV. It can be identified based on when it begins to conduct.

Question 2

An atom containing three outer-shell electrons is added to a Group IV semiconductor such as silicon. The result is
  1.a p-type semiconductor.
  2.an insulator.
  3.an n-type semiconductor.
  4.a conductor.

[rekilledagain]

Answer to Question 1

1

Answer to Question 2

1

[karateprodigy]

Excellent

[gcook]

Gracias!