Basic Electrical Terms
Here we read about some basic electrical terms and definition which are use in our daily routine.I think it will help for your better understanding these general terms.In this article we will know about the basic electrical terms.
Basic electrical terms
1. Voltage
Work done in carrying a unit positive charge from infinity to that point is called as a voltage at that point.
Mathematically V = W / Q
Where:
V is voltage at a point in volt
Q is charge in coulomb
W is the work done in joules
Units of measurement: Volts or Joules/Coulomb
2. Current
Rate of flow of electrons is termed as a current.
Mathematically I = Q / t
Where:
I is the current flowing in Amps
Q is the charge in coulomb, t is the time, Units of measurement: Amps or Coulomb / second
Difference between ac and dc current
A.C. v/s D.C.
Alternating Current  Direct Current 
Easy to generate as no Commutator required  Commutator is required to make it
unidirectional. 
Easy to step up and step down using Transformer  Difficult to step up or down as transformer cannot be used. 
A.C. machines are cheaper and more reliable then D.C. Machines  DC Machines are costlier and less reliable compared to AC Machines. 
Normally 3 wires for transmission and 4 wires for distribution required.  Only one or two conductors are required. In case of one wire, earth is used for return path. 
Poor voltage regulation  Better voltage regulation 
High line charging current.  No charging current hence no power loss 
Significant corona effect  Corona effect is less 
Significant skin effect  No skin effect 
Suitable medium and short distance transmission & distribution.  Suitable for long distance bulk power transmission. Popularly known as HVDC transmission 
3. Time Period
The time taken by alternating quantity to complete one cycle is called
its Time Period T.
Units of measurement: MS (units of time)
4. Frequency
The number of cycles per second is called the frequency of the alternating quantity. Its unit is Hertz (Hz).
In India and U.K. supply frequency is 50 Hz, where as in Japan and Saudi Arabia it is 60 Hz.
Units of measurement: Hz or Cycles/Second
Hence these are some Basic electrical term which is use in electrical circuit better understand or to know about electrical you must need to know about these basic electrical terms. if you will find any incorrect in above article you comment below in comment box.
