Monday 28 April 2014

current

When a charge is forced to move because of a potential difference (voltage) current is produced.In conductors - free electrons can be forced to move with relative ease, since they require little work to be moved.So current is charge in motion.The more electrons in motion the greater the current.

current is two types

1.AC(Alternating current) Voltage
2.DC(Direct current) Voltage

AC-Voltage:


Voltage = 230V/110V
Frequency = 50Hz/60Hz

Wave Form = Sine Wave
Symbol =

DC-voltage:



Voltage = NO Stranded
Frequency = 0 Hz

Wave Form = Straight Line
Symbol =

Checking Process:


AC-Voltage:  Phase to Neutral = 230 V

DC-voltage: No Standard

NOW
Phase to Earth = 230V(AC)
Neutral to Earth = Below 10V

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