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

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

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Electronic Principles
Which one of the following statements applies to common auto batteries?

Auto batteries are secondary dry-cell batteries
None of these
Auto batteries are primary wet-cell batteries
Auto batteries are primary dry-cell batteries
Auto batteries are secondary wet-cell batteries

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Electronic Principles
Which one of the following statements best applies to a parallel RLC circuit?

The sum of the current is always less than the applied current
None of these
All of these
The current waveform for each component always has the same amplitude and phase as the applied current
The voltage waveform for each component always has the same amplitude and phase as the applied voltage

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