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9.       a)  How  can  you  make  a  tester  for  testing  whether  a  given      5        C
                          material  is  a  conductor  or  an  insulator?  Explain  with  the   (3+2)
                          help of a circuit diagram.
                      b)  The liquid is a conductor and the circuit is also complete,
                          but the bulb does not glow. Why?
             10.      a)  An electric current is passed through a conducting solution.         5        K
                          List any two possible observations.                               (2+2+1)
                      b)  Write a short note on electrical tester.
                      c)  Name the effect of current responsible for the glow of the
                          bulb in an electric circuit.







































































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