Electronic Principles
Which one of the following phrases most accurately describes a purely capacitive circuit?

The ac voltage leads the current by 90 degree
None of these
Capacitive reactance provides the only opposition to current flow
Resistances provide the only opposition to current flow
Combinations of resistance and capacitive reactance provide any opposition to current flow

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Electronic Principles
The total capacitance of a series capacitor circuit is:

less than the value of the smallest capacitor
equal to the source voltage divided by total current
None of these
equal to the sun of the individual capacitive-reactance values
equal to the sum of the individual capacitance values

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Electronic Principles
What is a negative ion?

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

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