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

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

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Electronic Principles
When applying a square waveform to a capacitor, the circuit tends to:

peak the voltage and round off the current waveforms
round off both the voltage and current waveforms
peak the current and round off the voltage waveforms
peak both the voltage and current waveforms
None of these

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