Question Detail

PHY 102 Test Compilation PHY 102 14 Objective Question

Question

When silicon is doped with boron, it becomes
Options
A neutral conductor
B N-type semiconductor
C P-type semiconductor
Correct Answer
D neutral atom
Correct Answer

Option C is the correct answer.

Detailed Explanation

Silicon is a tetravalent semiconductor. Boron is a trivalent impurity (acceptor impurity). When silicon is doped with a trivalent impurity like boron, it creates 'holes' as majority charge carriers, making it a P-type semiconductor. The overall material remains electrically neutral.

Hint

Remember the valency of silicon (Group 14) and boron (Group 13) and how it affects charge carriers.

Question Info