Electronic Principles
What is a negative ion?

An atom that contains more protons than electrons
An atom that contains more electrons than protons
An atom that contains more protons than neutrons
None of these
An atom that contains more electrons than neutrons

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Electronic Principles
When a series RLC circuit is operating at its resonant frequency:

inductive reactance is equal to the capacitive reactance
None of these
inductive reactance is greater than the capacitive reactance
the difference between inductive and capacitive reactance is equal to the resistance
capacitive reactance is greater than the inductive reactance

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

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

The total voltage is less than the sum of the voltages across the resistance and capacitance
None of these
The voltage always has the same amplitude and phase for every part of the circuit
The total voltage leads the total current by less than 90 degree
The total voltage is equal to the sum of the voltages across the resistance and capacitance

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Electronic Principles
A high-pass filter:

increases the level of all frequencies by a significant amount
None of these
passes lower-frequency signals and reduces higher-frequency signals
has no effect on ac signals
passes higher-frequency signals and reduces lower-frequency signals

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