Copyright©2023 | Lab developed by Virtual Labs, IIT Roorkee
Components
Formulae
To measure the unknown inductance(having some resistance) by using standard capacitance
Equivalent Impedance:
z1 = l1 + r1 + r3
z2 = r2+`frac (r4* (r5+c1)) (r5+r4+c1) `
` Z_(eq) = frac (z1*z2)(z1+z2)`Cureent Through the battery is:
`I_(Bt) = frac(V) (Z_(eq)) `If Bridge is Balanced:
Voltage difference between galvanometer terminals: 0
Current through the galvanometer: 0
` r = frac(r2*r3)(r4) -r1`
` l=frac(c1*r3)(r4)*(r2*r4+r5*(r2+r4))`
Andersion Bridge
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•Pick up four resistances, two inductors and a AC voltage
source from the toolbox.
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•Connect the elements as shown in the figure to form
Maxwell Bridge.
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•After making the circuit click on check circuit button
to check the connections.
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•Now Enter the the value of R2, R3, Volatge and Frequency
and try to make deflection in meter close to zero.
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•Calculate the value of inductance using the formula
given and check the value using the check button.
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•Enter the value untill the bridge gets balanced.
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•Click on submit button to add it into observation table.
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•Repeat the Experiment for new generated value of
inductance.
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•PS. You can also try to listen the detector sound.
Calculations
Give Inputs:
Deflection
--.--
Observation Table
| R1 (kΩ) |
R2 (kΩ) |
R3 (kΩ) |
R4 (kΩ) |
R5 (kΩ) |
L(H) Unknown |
r (kΩ) |
C (µF) |
Volt. | Balanced |
|---|