Figure 6.32 shows a meter bridge in the (which is nothing but a particle wheastone bridge), consisting of two resistors `X` and `Y` together in parellel with a meter long constantan wire of uniform cross section.


with the help of a movable contact `d`, one can change the ratio of resistance of the two segments of the wire until a sensitive galvanometer `G` connected across `b` and `D` shows no deflection. The null point is found to be at a distance of `33.7 cm`. The resistor `Y` is shunted by a resistance of `12 Omega`, and the null point is found to shift by a distance of `18.2 cm`. Determine the resistance of `X` and `Y`.

As shown in the figure, a meter bridge consisting of two resistances P and Q together in parallel with a meter-long wire AB of uniform cross-section. C is a movable contact that can slide along the wire AB . The resistors P, Q and resistances of segments AC and CB of the wire constitude the four arms of bridge. the length AB = 100 cm, P = 4 Omega, Q is a coil of wire. With Q immersed in melting ice the null point is found to be at a distance of 40 cm from A . When the coil Q is heated to 100^@C , a 100 Omega resistor has to be connected in parallel with Q in order to keep the bridge balanced at teh same point. Calculate the temperature coefficient of resistance of the coil. .

In a meter bridge set up, which of the following should be the properties of the one meter long wire?

With the help of circuit diagram, explain how a meter bridge can be used to find unknown resistance of a given wire?

A battery is connected across a resistance wire of uniform cross-section . If another resistance wire is connected in parallel, then the intensity of electric field in the first wire will

In a meter bridge the null point is obtained at the middle point of the wire. If in one gap the resistance is 10 Omega , then the value of resistance in the other gap is :–

In a Wheatstone bridge resistance connected the bridge is balanced , when the resistance are in the ratio

In a meter bridge, the length of the wire is 100 cm. At what position will the balance point be obtained if the two resistances are in the ratio 1:3?

A meter bridge cannot be used to measure …… resistances

For determination of resistance of a coil, which of two methods is better Ohm's law method or meter bridge method ?