Charges on capacitor

Question

A capacitor is when charged then charge accumulates on the capacitor is positive or negative?

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Physics Nageshwar Rathore 4 weeks 1 Answer 43 views 0

Answer ( 1 )

  1.  
    The charge which moves, accumulates , or stores is nothing but a bunch of electrons, because these are the lightest charged particles. Positive charge is nothing but absence of electrons. Sodium (Na) gives up an electron and forms Na+ , a positive charged ion of sodium. In a semiconductor, electrons jump from valence band to conduction band, leaving ‘holes’ behind, which are treated as positively charged particle.
    In the case of capacitor, nothing is different. Electrons move from negative terminal of the cell to one plate of the capacitor, making it negatively charged. Other plate, due to induction, becomes positively charged by ‘pushing’ the same number of electrons from the plate to the wire, and the circuit is complete. So basically it’s the access of electrons at one plate and deficiency of electrons on other plate.

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