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Thus, having known the standard capacitance C and setting up
0
the electrical balance of Sauty bridge we can determine the unknown
capacitor.

l
C  C 2 (2.2)
X 0
l
1
3. The Procedure of Laboratory Work

All devices of Sauty bridge are placed on the laboratory bench
(Fig. 3.1).

Figure 3.1
1. According to Fig. 3.1 connect the electric circuit.
2. Switch on the source of alternating current.

3. Move the sliding contact to set electrical balance of Sauty
bridge.
4. Write down experimental data C and respectively length
0
l  AD, l  DB for the first condenser C in the table
1 2 1 x
5. Repeat similar measurements for another condensers C and
x 2
C .
x 3
6. Connect three condensers in parallel and carry out
measurements.

7. Connect three condensers in series and carry out
measurements.
8. The operating formula is

l
C  C 2
X 0
l
1

20