Electronic Principles
Which one of the following statements is true for the impedance of a series RC circuit?

The impedance is equal to the sum of the resistance and capacitive reactance
The impedance is greater than either the resistance or capacitive reactance but less than their sum
The impedance is less than the sum of the resistance and capacitive reactance
The impedance is greater than the sum of the resistance and capacitive reactance
None of these

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

The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance
The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it
The same current always flows through every part of a parallel circuit
The total current in a parallel circuit is always less than the smallest amount of current
None of these

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Electronic Principles
A high-pass filter:

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

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Electronic Principles
The dielectric constant of a material is a measure of:

the amount of voltage it can withstand before breaking down
None of these
how well the material concentrates electrostatic lines of force
how well the material concentrates magnetic lines of force
the amount of opposition to the current flow

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