What are the advantages of the null-point method in a Wheatstone bridge? What additional measurements would be required to calculate R unknown by any other?
What are the advantages of the null-point method in a Wheatstone bridge? What additional measurements would be required to calculate R unknown by any other?

Answer:

It is advantageous to use a null-point in the Wheatstone bridge because it prevents any effect on the resistance of the galvanometer caused by the balance point. Kirchhoff’s rule is used to determine the value of the R unknown.