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Electronic Principles

Electronic Principles
How may valence electrons does a silicon atom have?

2
1
4
None of these

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Electronic Principles
Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff?

20 km or less
20 k Ohm or more
200 k Ohm or more
None of these
200 k Ohm or less

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Electronic Principles
Doubling the operating frequency of a capacitive circuit:

cuts the capacitive reactance in half
has no effect on the capacitive reactance
doubles the amount of a capacitive reactance
multiplies the capacitive reactance by 6.28
None of these

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Electronic Principles
Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode

12 mA
10 mA
14 mA
11 mA
None of these

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Electronic Principles
A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage?

3 V
8 V
7.5 V
None of these
16 V

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Electronic Principles
The Norton current is sometimes called the

Thevenin voltage
Open-load current
None of these
Shorted-load current
Thevenin current

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