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

Ammeter
Voltmeter
Wattmeter
None of these
Ohmmeter

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Electronic Principles
Waveforms are graphs that show:

frequency on the vertical axis and amplitude on the horizontal axis
None of these
amplitude on the vertical axis and the passage of time on the horizontal axis
the passage of time on the vertical axis and amplitude on the horizontal axis
amplitude on the vertical axis and frequency on the horizontal axis

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Electronic Principles
Which one of the following phrasers best describes flux density?

None of these
The rate of change of the number of lines of magnetic force
The concentration of lines of magnetic force
The opposition to a build-up of magnetic fields
The force that maintains lines of force

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Electronic Principles
Which one of the following statements is true for current flowing in a series circuit?

The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit
The total current in a series circuit is equal to the total voltage multiplied by the total resistance
None of these
The same current flows through every part of a series circuit
The amount of current flow through each part of a series circuit can be different, depending on the resistance of each part and the amount of voltage applied to it

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