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

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

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Electronic Principles
In a pure inductor:

ac current lags the voltage by 90 degree
ac current leads the voltage by 90 degree
None of these
ac current is converted to dc voltage
ac current and voltage are exactly in phase

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Electronic Principles
The total capacitive reactance of a parallel capacitor circuit is:

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

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Electronic Principles
For a pure capacitor:

ac current lags the voltage by 90 degree
ac current leads the voltage by 90 degree
None of these
ac current is converted to dc voltage
ac current and voltage are exactly in phase

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