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Semiconductor Materials – 3 – 7

131. As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor ……..

(a) remains the same
(b) increases
(c) decreases
(d) none of the above

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

132. A hole and electron in close proximity would tend to ……..

(a) repel each other
(b) attract each other
(c) have no effect on each other
(d) none of the above

Answer
Answer : (b)

Explanation
No answer description available for this question. Let us discuss.

133. In a semiconductor, current conduction is due ……..

(a) only to holes
(b) only to free electrons
(c) to holes and free electrons
(d) none of the above

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

134. The random motion of holes and free electrons due to thermal agitation is called ……..

(a) diffusion
(b) pressure
(c) ionisation
(d) none of the above

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

135. A forward biased pn junction has a resistance of the ……..

(a) order of Ω
(b) order of k Ω
(c) order of M Ω
(d) none of the above

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

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