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- Electric current is expressed by the amount of charge flowing through a particular area in unit time.
- Electric current is the rate of flow of electrons in a conductor or it is the rate of flow of electric charges.
- Electric current = total charge flowing / time taken
- Electric Current (विद्युत धारा) SI Unit – Ampere
- named after the French scientist, Andre-Marie Ampere (1775–1836).
- One ampere is constituted by the flow of one coulomb of charge per second.
- Small quantities of current are expressed in milliampere (1 mA = 10–3 A) or in microampere (1 μA = 10–6 A).
- electrons constitute the flow of charges.
- in an electric circuit the direction of electric current is taken as opposite to the direction of the flow of electrons, which are negative charges.
- SI unit of electric charge is coulomb (C), which is equivalent to the charge contained in nearly 6 × 1018 electrons.
- An instrument called ammeter measures electric current in a circuit. It is always connected in series in a circuit through which the current is to be measured.
- electric current flows in the circuit from the positive terminal of the cell to the negative terminal of the cell
- A continuous and closed path of an electric current is called an electric circuit.
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