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  !)A thin conducting wire of radius R has a charge +Q.show that the increase in the tension of the wire when a pt. charge +q is placed at the centre of the ring is given by T=qQ/ 8(pi)2(episilon)R2 2)A simple pendulum consists ...
  0·4· #Physics#Electricity and magnetism
  asked2011-04-08 02:31:55