Copyright©2023 | Lab developed by Virtual Labs, IIT Roorkee
Components
Formulae
C1=Capacitor whose capacitance is to be measured,
R1 = A series resistance representing the loss in the
capacitor C1 ,
C2 = A standard capacitance with series resistance of R2 ,
R3 and R4 = Non-inductive resistances.
At Balance:
Equating the real and imaginary terms,
Measure capacitance value is
WorkSpace
--.--
mA
Wien's Series Bridge Experiment
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STEP 1:
Pick up four resistances, two capacitors, a battery and a
headphone from the Components.
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STEP 2:
Connect the resistances, capacitors and the battery as shown
in the figure to form a Wein series bridge.
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STEP 3:
Click on check circuit button to check the connections.
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STEP 4:
Now choose R1,R2 and R3 to a fixed value and vary the value of
R4 only such that ratio (R4/R3) is nearly an integer between 1
to 5, and fix it to the value where the sound frequency
changes from loud beap to pleasant sound.
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STEP 5:
Hit the submit button and make the resistance arm ratio
mentioned in the alert equal to the arm ratio not mentioned as
per the balancing condition
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STEP 6:
Now observe the reading of digital meter as it drops to zero
hit"Submit"
button.
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STEP 7:
Repeat the experiment by changing the values of resistances
and note atleast 3 readings.
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Wien's Series Bridge Experiment
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Calculations
C2 = 0.01 µF
Observation Table
| R1(Ω) | R2(Ω) | R3(Ω) | R4(Ω) | Voltage(V) | C(µF) |
|---|