Electric Current, Its Expression And units
Electric currentRate of flow of charge through a given cross-section of a wire is called electric current.
It is given by the formula,
Steady currentAn electric current that does not change with time is known as steady current. An example would be closing or opening a switch to add or remove a battery, current may initially change, but then reach a final ``steady-state'' value after a long time, or go to zero, depending on the situation.
Unit of currentThe unit of current is or
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