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Measurement of unknown resistance using Carey-Fosters Bridge


Posted by: seminar class
Created at: Friday 06th of May 2011 03:59:51 AM
Last Edited Or Replied at :Friday 06th of May 2011 03:59:51 AM
unknown resistance experiment for physics , to determine specific resistance of a material of a wire using 1m wire, discussions on carey foster bridge , carey foster bridge, determination of unknown resistance using meter bridge , ppt to find the specific resistance using meter bridge, to deteermine the valuesof a law resistqance by careys fasrter bridge , measure of law resistance by carey foster bridge, what type of unknown resistance can be used in experiment , operation of carey foster bridge, carey foster bridge theory , experiment to determine specific resistance of a material, measuring resistivity using a meter bridge , carey foster s bridge,
1 Aim of experiment
We are going to determine the value of an unknown resistance using a meterbridge
and then make furthur accurate measurements using Carey Foster
bridge to take into account the specific resistivity () of the bridge wire.
Finally measuring the radius and length of the unknown resistance we can
determine the specific resistivity of the material given.
2 Apparatus required
a)An unknown resistance
b)A known resistance(variable)
c)A galvanometer
d)A very high resistance of the order of 15000
to protect the galvanometer.
e)A dry cell
f)A plug key
g)A ..................[:=> Show Contents <=:]



Measurement of unknown resistance using Carey-Fosters Bridge


Posted by: seminar class
Created at: Friday 06th of May 2011 03:59:51 AM
Last Edited Or Replied at :Friday 06th of May 2011 03:59:51 AM
unknown resistance experiment for physics , to determine specific resistance of a material of a wire using 1m wire, discussions on carey foster bridge , carey foster bridge, determination of unknown resistance using meter bridge , ppt to find the specific resistance using meter bridge, to deteermine the valuesof a law resistqance by careys fasrter bridge , measure of law resistance by carey foster bridge, what type of unknown resistance can be used in experiment , operation of carey foster bridge, carey foster bridge theory , experiment to determine specific resistance of a material, measuring resistivity using a meter bridge , carey foster s bridge,
,BB0,CC0,DE are thick metal
strips which have zero resiatance A0D and BE are gaps in which resistances
to be compared are connected. The dry cell is connected through a plug
key between A0 and B0. A pivoted galvanometer is connected between the
central terminal (F) and sliding contact J through a high resiatance. With
a standard resiatance in R the position of jockey is found for which the
current in the galvanometer is zero. Then,
X
R
= ResistanceofAJ
ResistanceofJB
= l
100 − l
(1)
Using the bridge one can calculate the resistance of the wire from which the
specific resistanc..................[:=> Show Contents <=:]



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