Electronic Principles
A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff?

10 k Ohm
None of these
20 k Ohm
1 k Ohm
2 k Ohm

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

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

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