help!!! experiment

Discussion in 'Homework Help' started by benazir_23, Aug 28, 2009.

  1. benazir_23

    Thread Starter New Member

    Aug 28, 2009
    1.Strings of christmass lights are sometimes made of miniature lamps connected in series.For an 8 lamp 220v set ,what is the voltage across each lamp?if one lamp were removed,what would happen?the voltage across tyhe empty socket becomes equal to the line voltage.why?

    2.As one turns on more lamps in an ordinary household circuit ,what happen to the current in the first lamp ? to the line current? to the line voltage? why is it not customary to connect househoild electric lamps in series?

    3.A piece of copper wire is cut into n equal parts .These parts are connected in parallel .How will the joint resistance of the parallel combination compare with the original resistance of the single wire?
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    These circuits are all either parallel or series. Read through our Ebook for useful information.