If the temperature of an extrinsic semiconductor is increased so that the intrin

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Question
If the temperature of an extrinsic semiconductor is increased so that the intrinsic carrier concentration is doubled, then
Options
A. the majority carrier density is doubled
B. the minority carrier density is doubled
C. the minority carrier density becomes 4 times the original value
D. both the majority and minority carrier densities double

Correct Answer

both the majority and minority carrier densities double

Explanation

As the intrinsic carrier concentration is doubled, the concentration of both electrons and holes is doubled.

4. In a shield helix
Options
A. the spacing between adjacent turns is very large
B. the spacing between adjacent turns approaches zero
C. the spacing between adjacent turns approaches zero and wire thickness approaches zero
D. the spacing between adjacent turns is very large wire thickness approaches zero

5. Match the following:

6. A line of characteristic impedance Z₀ branches into two line each with characteristic impedance Z₀. The refracted voltage is
Options
A. zero
B. infinite
C. equal to incident voltage
D. two third of incident voltage

8. A surge voltage
Options
A. has very high magnitude and very long duration
B. has very high magnitude and very small duration
C. has very high magnitude and very small duration and can be positive or negative
D. can be only positive

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