Deduce the conditions for balance in a wheatstone bridge. Using the principle of Wheatstone bridge, describe the method to determine the specific resistane of a wire in the laboratory. Draw the circuit diagram and write the formula used. Write any two important precautions you would observe, while performing the experiment.

State Wheatstone bridge principle. Use kirchoff'slaws to obtain the relation bteween the resistance in four arms of the Wheatstone bridge by drawing circuit diagram.

What is the principle of a metre bridge ? With a circuit diagram, explain how a metre bridge can be used to determine an unknown resistance of a given wire.

Draw diagram of aWheatstone bridge and by using Kirchhoff’s Laws derive the condition for balance of Wheatstone bridge.

Draw a cricuit diagram of a metre bridge arranged to find the value of an unknown resistance. Write the formula used.

Using Kirchoff's law, derive the condition for the balance of a Wheatstone bridge circuit.

Draw a circuit diagram for determining the unknown resistance R using meter bridge. Explain briefly its working, giving the necessary formula used.

Draw the circuit diagram of Wheatstone bridge. Under what condtion, no current flows through its galvanometer (balanced condition)?

Draw a circuit diagram of a meter bridge and write the necessary mathematical relation used to determine the value of unknown resistance. Why cannot such arrangement be used for measuring very low resistances?

The measurement of an unknown resistance R is to be carried out using wheatstone bridge(see Fig. EP 3.10). Two students perform an experiment in two ways. The first student takes R_2 = 10 Omega and R_1 = 5 Omega . The other student takes R_2 = 1000 Omega and R_1 = 500 Omega . In the standard arm, both takes R_3 = 5 Omega . Both find R = R_2/R_1 R_3 = 10 Omega within errors.