1. For a particular material the Hall coefficient was found to be zero.
The material is
(A) insulator
(B) metal
(C) intrinsic semiconductor
(D) none of the above
Ans: B
(A) insulator
(B) metal
(C) intrinsic semiconductor
(D) none of the above
Ans: B
2. is an element used in semiconductors whose atoms have three valence
electrons.
(A) An acceptor
(B) A donor
(C) Germanium
(D) Silicon
Ans: A
(A) An acceptor
(B) A donor
(C) Germanium
(D) Silicon
Ans: A