3 disadvantages of ac over dc

In the last article, we have discussed about the 8 advantages of alternating current over direct current. Today we will discuss the disadvantages or drawbacks of ac over dc. Let us discuss them one by one:

  1. First disadvantage is that the shock of the ac is attractive but the shock of dc is repulsive.
  2. At high voltages, it is more dangerous to work with ac than dc.
  3. In the processes like electrorefining, electroplating etc. , one can not use the ac. In these processes, only dc is used.

These are the 3 disadvantages of ac over dc. If you know more, please mention in the comment section.

The meaning of Transient Current

We all must be aware about the meaning of the current. Yes, it is rate of flow of charge. Do you know that when an electric circuit having a ohmic resistance is switched on, the current reaches to maximum value almost in zero time and when the circuit is switched off, the current drops to zero from maximum value in a no time. This you can observe while switching on or off an electric circuit having ohmic resistance only.

But do you know that if there is inductor or capacitor in a circuit, the current will not become maximum from zero or from maximum to zero in no time. The current will take a finite time or one can say it is a gradual process. Thus the electric current which takes finite time to become maximum from zero or zero from maximum in circuits having inductors and capacitors (condensers), then such time of currents are called transient currents.