Obtain the balanced conditon of Wheatstone bridge from Kirchhoff’s Law.

Establish the balanced condition of Wheatstone's bridge by applying Kirchhoff's laws .

Establish the balanced condition of Wheatstone's bridge by applying Krichhoff's laws.

Write Kirchhoff’s 2nd law.

Statement I : If the resistance of the first two arms P and Q of a balanced Wheatstone bridge are exchanged , the balanced condition is not disturbed . Statement II : The balanced condition of a Wheatstone bridge is independent of the resistance of the galvanometer used .

Statement I : A balance is obatained at the position of 40 cm othe metere wire ,when 2Omega and 3 Omega resistances are put in the lift and right gaps respectively of a meter bridge Statement II : The balanced condition of a Wheatstone bridge is P//Q=R//S .

Write the Wheatstone bridge principle.

What happens if the galvanometer and cell are interchanged at the balance point of the wheatstone bridge? Would the galvanometer show any current?

A coil of wire is kept in melting ice . Its resistance measured by a Wheatstone bridge is 5Omega . If the coil is heated to 100^(@)C and another wire of resistance 100Omega is coonnected in parallel to it , the balanced condition of the brige remains unchaged . Determine the temperature coefficient of resistance of the wire of the coil .

When the value of r in the balanced Wheatstone bridge, shown in the figure: is increased from 5 Omega to 7 Omega the value of S has to be increased by 3 Omega in order to maintain the balance. What is the initial value of S ?

Draw Wheatstone bridge circuit and write down the balancing condition of it. In a meter bridge the balance point is found to be at 40 cm from one end when the resistor at the end is 10 Omega . Find the resistance at the other side. If the galvanometer and the cell are interchanged at the balance condiotion, would it affect the current through the galvanometer?