Question

what is metre Bridge? how is the resistance measured by it?

Answer 1

A Meter Bridge is also called as slide wire bridgeand is an instrument that works on the principle of a Wheatstone bridge. A meter bridge is used in finding the unknown resistance of a conductor as that of in a Wheatstone bridge.The metre bridge, also known as the slide wire bridge consists of a onemetre long wire of uniform cross sectional area, fixed on a wooden block. ... The specific resistance or resistivity of the material of the wire can be then calculated by using the relation, ; Where L be the length of the wire and r be its radius.

Answer 2

To find the resistance of a given wire using a metre bridge and hence determine the specific resistance of its materials. The metre bridge, also known as the slide wire bridgeconsists of a one metre long wire of uniform cross sectional area, fixed on a wooden block. A scale is attached to the block.