CAREY FOSTER'S BRIDGE SIMULATION

Choose Load Resistence X(In Ohms)

 

Selected value is  

Formulas

Length(l1,measured from left side when Load resistance X placed in left)

Among the following which Circuit is correct for Carey Foster
Bridge Experiment? X



Table 1: To determine the resistance per unit length of the bridge wire (ρ):

S.No. Resistance connected in decimal
resistance box X (in ohm) 		Zero deflection Position when resistance box is connected (l2-l1)
( in cms) 		ρ = X/ (l2-l1)
(in ohms)
In left gap l1 (in cms) In right gap l2 (in cms)
01
02
03
04
05
Mean ρ = Ohms

NOTE :- To observe reading for Table2

Table 2: For the resistance of the given wire (Y):

S.No. Resistance connected in decimal
resistance box X (in ohm) 		Zero deflection Position when resistance box is connected (l2-l1)
( in cms) 		Y = X- ρ (l2-l1)
(in ohms)
In left gap l1 (in cms) In right gap l2 (in cms)
01
02
03
04
05
Mean Y = Ohms

The given Length(l) of the wire is

The given Radius(r) of the wire is(in cm)

Selected length is = and selected radius is =

 

The value of specific resistance of the material of unknown wire-

*π*r2)/l

The value of specific resistance is = 

Verify the experiment by entering value of specific resistance :

©Abhay Gupta