Thursday 31 March 2011

ELECTRICITY-HOW THE VAN DE GRAAF WORKS




Van de Graaf is a device to detect charges.
       To prove that when negative charges flow there is a flow of current.
       Current flow is shown by reading of galvanometer.  How?
       Dome shape VDG is positive charges, so it attract negative charges from the earth.
      The negative charges flow through the wire connected thru galvanometer.  Then the meter move.
      So u can prove it!!.  very easy


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