Exercise: Electronic Devices And Circuits

Questions for: Electronic Devices And Circuits

Hall coefficient KH and charge density r are related as
A:
KH =
B:
KH = r
C:
KH =
D:
KH = (r)1.2
Answer: A
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Indium, aluminium, arsenic are all p type impurities.
A:
True
B:
False
C:
D:
Answer: B
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When a BJT is operated under saturated condition
A:
both junctions are forward biased
B:
both junctions are reverse biased
C:
CB junction is forward biased and EB junction is reverse biased
D:
EB junction is forward biased and CB junction is reverse biased
Answer: A
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Pentavalent impurity creates n type semiconductor.
A:
True
B:
False
C:
D:
Answer: A
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Assertion (A): When p-n junction is forward biased, steady current flows.

Reason (R): When a p-n junction is forward biased, free electrons cross the junction from n to p and holes from p to n.

A:
Both A and R are true and R is correct explanation of A
B:
Both A and R are true but R is not a correct explanation of A
C:
A is true but R is false
D:
A is false but R is true
Answer: A
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