Question

What is the advantage of kelvin double bridge over wheatstone bridge?

Answer 1

*heist sensitivity

*high resistance measure with less power consumption

*more over much less complex than other bridges with this sensitivity

The resistance of connecting wires is comparable to unknown resistance.

R= PS/Q + (qr/(p+q+r))(P/Q - p/q);

where r is the resistance of connecting wires.

when the bridge is balanced r is eliminated.