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Electronic Principles

Electronic Principles
What causes the depletion layer?

Doping
None of these
Barrier potential
Recombination
Ions

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Electronic Principles
How much current flows through a 60-W light bulb that is operating at 120 V?

None of these
0.083333333333333
7200 A
180 A
0.5A

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Electronic Principles
Positive ions are atoms that have

Gained a proton
None of these
Lost a proton
Lost an electron
Gained an electron

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Electronic Principles
A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current?

13 mA
3.2 mA
3.75 mA
None of these
0.05 mA

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Electronic Principles
In an intrinsic semiconductor, the number of free electrons

Impossible to say
None of these
Is less than the number of holes
Is greater than the number of holes
Equals the number of holes

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Electronic Principles
The merging of a free electron and a hole is called

Covalent bonding
Recombination
None of these
Lifetime
Thermal energy

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