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AC - from WIkipedia
Power in an electric circuit is the rate of flow of energy past a given point of the circuit. In alternating current circuits, energy storage elements such as inductors and capacitors may result in periodic reversals of the direction of energy flow. The portion of power that, averaged over a complete cycle of the AC waveform, results in net transfer of energy in one direction is known as active power (sometimes also called real power). The portion of power due to stored energy, which returns to the source in each cycle, is known as reactive power.
The virtual network is a source of information of all kinds, and this is primarily due to the fact that anyone who has access to the Internet, you can actually write anything there. When it comes to electrical services, this issue looks the same. The Internet is full of advice relating to self-repair minor faults. If they do not come from a known source, however, we should not make major repairs on their own. Websites specific electricians also contain different advice, but here they concern primarily the need to call an electrician. It may turn out that insufficiently tightened the fuse will make that we will be deprived of light, and for such a trifle is not worth it to call professional help.
The phone to ask for the intervention of the electric
Very often it happens that we need to urgently call for help electrician. Electrical services are actually available in most of the clock and a phone call asking for intervention is possible at any time. Contact numbers for electricians we can find, among other things on the Internet. Before doing this, however, the phone should check that the electrical installation has not only a momentary fault or is caused by something we can remove on your own. Then call an electrician is unfounded. Repair of electrical installations is quite complicated and electricians often get calls asking about a possible valuation services. However, this is impossible in this field, with the case not aware of many customers