![]() One Volt When 1 Joule of work is done in carrying one coulomb (1C)of charge from one point to another of a current carrying conductor then the potential difference is said to be IV. SIunit of potential difference – Volts.Denoted by “V”. In case of electric current, the flow of charge is made possible due to chemical action with in a cell that generates the potential difference across theterminals of the cell.Įlectric potential Difference : It is defined as the work done in carrying a unit charge from one point to another in an electric circuit. It is only possible when there is high pressure at one side and low at another side, then it will move from high pressure to low pressure. For example “water flowing through a tube”. The electrons can only flow when there is difference of electric potential. It is represented asĮlectric Circuit : It is a closed path along which the electric current flows. ![]() It has low resistance(practically).Ideally ammeter’s resistance must be zero. It is always connected in series in a circuit. Small quantity of current are expressed inĪmmeter : It is an instrument used to measure the electric current in a circuit. In an electric circuit the electric current flow in an opposite direction to the flow of electron (–ve charge).This current is called conventional current.It flows from the +ve terminal battery or cell to –ve terminal. Denoted by A.Īmpere Defined as one coulomb of charge flowing per second. Denoted by (I)Įlectric current can also be defined as the amount of charge flowing through a unit cross-section in per second. Rate of flow of net charge is called current. “Coulomb” is the SI unit of charge, represented by C.ġC Net charge is equivalent to the charge contained in nearly electrons electrons. ![]() It can be either negative (electron) or positive (proton)
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