ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Physics Electronics

Question:
When phosphorus is added as an impurity in germanium, there is an increase in?

Option A):
Holes in Ge
Option B):
Both  A and B
Option C):
Positrons in Ge
Option D):
Free electron in Ge

Correct Answer is Option B):
Both  A and B