Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W?

89.3 ohm
224 ohm
88.8 ohm
77.7 ohm
None of these

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit
has no effect on the current through the inductors
None of these
cuts the current through the inductors one-half
doubles the amount of current through the inductors

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