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Electric Current in Conductors — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectric Current in Conductors1 Mark
Question
When a current is established in a wire, the free electrons drift in the direction opposite to the current. Does the number of free electrons in the wire continuously decrease?
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Answer

No the complete circuit (which is the only condition to flow current) restores number of electrons equal to the number of electrons passed through wire.

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