Procedure

Fig. 1. Circuit digram of experimental set-up for Measurement of Self Inductance by Anderson's Bridge

1) Apply Supply voltage (3V) from the signal generator with arbitrary frequency. ( say 50Hz). Also Set the value of the unknown air cored coil from 'Set Inductor Value' tab
2) Then switch on the supply to get millivoltmeter deflection.
3) Choose the values of r₁, R₂, R₃, R₄, r, and C from the resistance and capacitance box. Varry the values to some particular values to achieve "Null".
4) Observe the millivoltmeter pointer to achieve "NULL".
5) If "Null" is achieved, switch to 'Measure Inductor Value' tab and click on 'Simulate' . Observe calculated values of unknown Inductor (L₁) and it's Internal Resistance (R₁).
6) Also observe the Dissipation factor of the unknwown capacitor which is defined as

$$ \frac{\omega L}{r} \ Where, \omega=2 \pi f $$