This bridge works under the principle of wheatstone bridge. To find the resistance of the given wire using meter bridge and hence determine the specific resistance of its material. The two ends of the wire are attached to ter minals a and c. To verify the laws of combination of resistances in series using a meter bridge. A meter bridge slide wire bridge, a lecranche cell, a galvanometer, a resistor, a jockey, a one way key, a resistance wire, a screw gauge, a meter scale, a set of square, connecting wire, a piece of sand paper. Meter bridge study material for iit jee askiitians. Meter bridge is an instrument that is used to find the unknown resistance of a coil or any other material. A meter bridge, galvanometer, one way key, a resistance box, a battery jockey, unknown. Ab is a uniform wire 100 cm1m long, stretched in two segments of 50 cms. Measurement of inductance by hays bridge apparatus used. Precautions when using a metre bridge 1 the value of the known resistance s should be chosen so that the balance point comes somewhere on the middle third of the wire, i. It is bad practice to have a balance point near one end of the wire. The meter bridge is a device for measurement of resistance using the principle of wheatstone network. Aim to find the resistance of a given wire using meter bridge and hence determine resistivity of its material apparatus.
The hays bridge differs from maxwells bridge by having resistor r1 in series with standard capacitor c1 instead of in parallel. Electric science free energy using magnet with light bulb at home 2019. Another advantage of the wheatstone bridge is that, because it uses a null measurement, vab 0, the galvanometer does not have to be calibrated. Thick metal strips bent at right angles ar e used to pr ovide two gaps e and f to connect resistors forming a wheatstones fig.
We know that the wheatstone bridge is used to measure the unknown resistance connected in a circuit. Name of the apparatus quantity 1 lab trainer kit 1 2 multimeter 1 3 unknown inductor 1 theory. Finding the resistance of a given wire using meter bridge. Meter bridge determination of specific resistance experiment edunovus online smart practicals. It consists of four resistors of which two resistors are known resistors, one. To study the vi characteristics of an incandescent lamp. Lab experiment for kelvin double bridge sign up to get notified when this product is back in stock measurements labfind the value of unknown resistance using a kelvin double bridge. Notice that the computed rx does not depend on the voltage vo. Drag one of the wires to the right gap of the metre bridge. The galvanometer has a current sensitivity of 10 mma and an internal resistance of 100 calculate the deflection of the galvanometer caused by the 5. The battery voltage is 5 v and its internal resistance negligible. Click on the battery and the resistance box shown on the side bar menu to place them near to the metre bridge. Lab experiment for kelvin double bridge pantech solutions.
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