The firgure shows a circuit diagram of a 'Wheatstone Bridge' to measure the resistance `G` of the galvanometer The relation `(P)/(Q) = (R )/(G)` will be satisfied only when

Draw the circuit diagram for wheatstone bridge to determine unknown resistance. Write condition for balancing of the bridge.

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

In the following Wheatstones bridge P//Q=R//S . If key K is closed then the galvanometer will show deflection

A null point is obtained when two resistors , of resistance r each, are connected in series and placed in the fourth arm of a wheatstone bridge . Now , the resistance R of the third arm is kept fixed ,and r, connected in parallel, are placed in the fourth arm. then a null point is obtained only by interchanging the resistances P and Q , and also the value of r.