Electric Circuits
The current flowing between electrodes inside a lead acid battery is

 ionization current.
 polarization current.
 electron current.
 proton current.

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Electric Circuits
A pole of driving point impedance is

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

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Electric Circuits
Pure metal generally have

  low conductivity and zero temperature coefficient.
  high conductivity and low temperature coefficient.
  high conductivity and large temperature coefficient.
  low conductivity and high temperature coefficient.

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