Electronic Principles
The period of a waveform is:

None of these
the time required for the voltage to rise from 10% to 90% of the peak amplitude
equal to 0.707 times the peak amplitude
the time required to complete one full cycle
the number of cycles completed in one second

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

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
peak the voltage and round off the current waveforms

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Electronic Principles
Current is

The force that causes electrons to flow
None of these
An imbalance of electrical charges
The number of free electrons in an atom
The flow of charged particles through a material

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Electronic Principles
Which one of the following statements is true for the currents in a parallel RC circuit?

The current always has the same amplitude and phase for every part of the circuit
The total current. is greater than the sum of the currents for the resistance and capacitance
The total current is equal to the sum of the currents for the resistance and capacitance
The total current is less than the sum of the currents for the resistance and capacitance
None of these

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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 force that maintains lines of force
The concentration of lines of magnetic force
The opposition to a build-up of magnetic fields

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