Electric Circuits
An ac voltage source v = vo sinωt is connected across a parallel plate capacitor C. If the conductor current is ic and the displacement current is id, then which is true among following relation

 ic + id = 0.
 ic > id.
 ic < id.
 ic = id.

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Electric Circuits
A pole of driving point impedance is

 zero current for a finite value of driving voltage.
 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.

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