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details about uses of metre bridge.more about it.

details about uses of metre bridge.....more about it...experiments based on it

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i hope it will... View the full answer

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  When measuring low resistances, the lead wires of the cable connected to meter can... View the full answer

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  • .experiments based on it
    • regre33
    • Jul 20, 2016 at 12:24pm
  • My task is to find the resistances of some unknown resistors, accurately. The Wheatstone brige allows me to do this, and with much more accuracy than using an ammeter and a precise voltage value from the power pack. This is because it is a null method, so it does not depend on the accuracy of the equipment (other known resistors are required, however). Ammeters are not as good for this use since they have internal resistances which bring relatively high errors. Also, the power packs available are of poor quality (the output voltage can vary quite dramatically). Using a Metre Bridge , which is a simple version of the Wheatstone bridge, I will find the values of three unknown resistors. The way to do this is to move the jockey (, by the arrow in contact with the Uniform Wire) until the galvanometer reads 0. It is then said to be balanced.
    • mlnopq
    • Jul 20, 2016 at 12:32pm

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