Re: doubts
Hi,
A resistor is defined as something that resists current or charges to flow through a conductig path. Therefore the zig-zag notation is used to represent the property of resisting.
An inductor is of course an element that creates magnetic field in the direcction parallel to the flow of charged in the path. This can be done only by wiending the conductor so that the centrally directed magnetic field can be in parallel to the direction to the propagation of teh charges. That is why the notation of inductor is like a coil with the central axis alng the diection of the wire.
A capacitor is basically thought of as a pair of parallel plates with insulator in between so that in steady state it does not allow any flow of charge through. So the notation is like, two lines perpendicular to the wire (the two plates where the ends of the conductor are connected) separated by a space (to show the discontinuity of the charges).