Electric Circuits
Two identical resistors are first connected in parallel then in series. The ratio of resultant resistance of the first combination to the second will be

 0.25.
 2.
 0.5.
 4.

ANSWER DOWNLOAD EXAMIANS APP

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.

ANSWER DOWNLOAD EXAMIANS APP