Is my defination of Voltage is correct ?

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navedjobs

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Hi i am computer engg. student and wanted to get some good knowledge about electronics...
I have a question , the question is something like, I understood Voltage as a pressure applied to current, the higher is the pressure the faster current flows..is it true ?
OR you can explain Voltage in better manner than this and please use simple words because being a computer student i don't have much knowledge about electronics & current.
 

I will little modify you sentence like voltage is potential difference ( analogy wise pressure difference between two points where fluid is kept ) and current is flow of electrons ( flow of fluid analogy wise where fluid flows from higher pressure point to lower pressure point ) and more the potential difference higher the voltage and from Ohm's law V=IR for the same resistance if voltage increases current increases....

Good Luck
 

hi naved..
you can imagine voltage as pressure difference across a resistor (which opposes flow of current)..the more is the pressure ..more is the amount of current flowing through resistor
and the velocity of current is the drift velocity of electrons...drift velocity=mobility of electron* electric field..so when the voltage is increased the associated electric field also increase and the drift velocity of electrons also increases..
 


Current is the flow of charge and voltage is defined as the energy per unit charge. So, if voltage is higher, energy per unit charge is higher, and so flow of charge is quicker and so current is higher. Mathematically, these are expressed as I = Q/T and V=E/Q.

Hope this helps.
Tahmid.
 

The amount of electrical potential energy, 1C losses from A-B is termed as potential difference across AB
is this true?
C- columb
 

Yes, the potential difference across AB is the amount of electrical potential energy 1C charge loses (or gains) from A-B. It is basically the work done by or on the charge.
 

Voltage - Rate of speed of flow of electrons.
Current - Amount of flow of electrons.
Power - Voltage * Current
 

Voltage can be defined in many ways some of its monikers are
Potential difference, Electro motive force(emf)
Voltage can be defined as workdone in moving a charge from point A to point B against an electric field.
Voltage can be seen in many forms, example
what you see at the terminals of a battery is also a voltage but EMF suits it better.
what you see across a current carrying resistor's terminals is also a voltage.
Be careful there is a slight nuance in the above two scenarios..........
 

thanks for the explanation guyz
 

I personally understand voltage as the urge or tendency charges(imprisoned) have to move in an electrical circuit.When given a chance to go out(closed circuit)they really move fast(current flows in the circuit)
 

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