A direct Current (dc) flows in one direction , either steadily or in pulses.:
Current (I) - The quantity of electrons passing a given point (unit : ampere)
Voltage (V) - Electrical pressure or force (unit : volt)
Resistance(R) - Resistance to the flow of a current, (unit : ohm)
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Power (P) - the work performed by a current , (unit : watt)
Potential Difference - the difference in voltage between the two ends of a conductor through which a current flows , also known as a voltage drop.
