Electronic Principles
Current can flow through a normally open push button switch as long as:

you are pressing the button
None of these
you are not pressing the button
its contact remain open
its contact remain open

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Electronic Principles
A low-pass filter:

has no effect on ac signals
passes lower-frequency signals and reduces higher-frequency signals
passes higher-frequency signals and reduces lower-frequency signals
reduces the level of all frequencies by a significant amount
None of these

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Electronic Principles
Which one of the following statements applies to common, non-rechargeable flashlight batteries?

Common flashlight batteries are primary dry-cell batteries
Common flashlight batteries are primary wet-cell batteries
None of these
Common flashlight batteries are secondary wet-cell batteries
Common flashlight batteries are secondary dry-cell batteries

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

doubles the amount of current through the inductors
cuts the current through the inductors one-half
has no effect on the current through the inductors
None of these
increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit

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