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

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Electronic Principles
The core of an electromagnet is said to be in saturation when:

changing the polarity of the current in the coil changes the polarity of the magnetic field around the core
None of these
the core is permitted to move freely within the coil
an increase in current through the coil causes no further increase in the mmf
frequent changes in the direction of current through the coil causes heating effects in the core material

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Electronic Principles
What is the difference between the kinds of charges for an electron and a proton?

An electron has a positive charge and a proton has no charge
An electron has a negative charge and a proton has no charge
None of these
An electron has a positive charge and a proton has a negative charge
An electron has a negative charge and a proton has a positive charge

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