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Electronic Principles

Electronic Principles
A device that converts light energy to electrical energy is called a:

photo transistor
None of these
photodiode
solar cell
thermocouple

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Electronic Principles
A real voltage source has

None of these
A large internal resistance
Zero internal resistance
Infinite internal resistance
A small internal resistance

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Electronic Principles
Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating?

R = E2/P
I = P/E
None of these
P = PR
P = E2/R

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Electronic Principles
Which one of the following is most likely used for measuring the rate of electron flow?

Wattmeter
None of these
Ammeter
Ohmmeter
Voltmeter

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Electronic Principles
Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit?

Magnetomotive force
Flux density
Number of lines of force
Reluctance
None of these

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Electronic Principles
Which one of the following devices is most often used for measuring opposition to current flow in a circuit?

Ammeter
Wattmeter
Voltmeter
None of these
Ohmmeter

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