Measurement of Self Inductance of High Quality Factor Coil by Hay's Bridge 
The Hay’s bridge is suitable for the measurement of inductances of coils with Q factor
If C4 is the capacitance and R4 is the resistance of Hay’s bridge, then the Q factor of Hay’s bridge is given by
A Maxwell's capacitance bridge is used to measure an unknown inductance in comparison with capacitance. The various values at balance: R2=400`Ω`, R3=600`Ω`, R4=1000`Ω` ; C4=0.5uF. Calculate the values of R1 and L1
The instrument which measures the total quantity of electricity delivered in a particular time is
A Maxwell's capacitance bridge is used to measure an unknown inductance in comparison with capacitance. The various values at balance: R2=500`Ω`, R3=500`Ω`, R4=1000`Ω` ; C4=0.5uF. Calculate the values of R1 and L1