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

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

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

The ac voltage lags the current by 90 degree
Combinations of resistance and inductive reactance provide any opposition to current flow
Inductive reactance provides the only opposition to current flow
Resistances provide the only opposition to current flow
None of these

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