Electric Circuits
Kirchhoff’s voltage law is used for

 representing a current source.
 nodal analysis.
 loop analysis.
 finding equivalent resistance.

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Electric Circuits
A pole of driving point impedance is

 zero current for a finite value of driving current.
 zero voltage for a finite value of driving voltage.
 zero voltage for a finite value of driving current.
 zero current for a finite value of driving voltage.

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