what is current? Give SI unit?
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Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms.
The ampere, symbol A, is the SI unit of electric current.
It is defined by taking the fixed numerical value of the elementary charge e to be 1.602 176 634 x 10-19 when expressed in the unit C, which is equal to A s, where the second is defined in terms of ΔνCs.
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The SI unit of electri current is the ampere,or amp, which is the flow of electric charge across a surface at the rate of one coulomb per second.
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