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Electronic Principles

Electronic Principles
Positive ions are atoms that have

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

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

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Electronic Principles
Thevenin theorem replaces a complicated circuit facing a load by an

Ideal current source and series resistor
Ideal current source and parallel resistor
None of these
Ideal voltage source and series resistor
Ideal voltage source and parallel resistor

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Electronic Principles
How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source?

0.41666666666667
2.02 A
0.02 A
None of these
0.955 A

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Electronic Principles
What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it?

122 W
None of these
3 W
6 W
64 W

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Electronic Principles
Most AC power is obtained from:

None of these
generators
batteries
oscillators
lightning

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