Open AccessPhysics: Wheatstone bridge
Author(s) -
R Lockhat
Publication year - 2020
Publication title -
southern african journal of anaesthesia and analgesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.175
H-Index - 10
eISSN - 2220-1173
pISSN - 2220-1181
DOI - 10.36303/sajaa.2020.26.6.s3.2549
Subject(s) - wheatstone bridge , galvanometer , resistor , bridge (graph theory) , bridge circuit , electrical engineering , physics , equivalent series resistance , engineering , optics , biology , voltage , laser , anatomy
A Wheatstone bridge is a device which is used to find the unknown resistance. It is an instrument or a circuit consisting of four resistors or their equivalent in series which is used to determine the value of an unknown resistance when the other three resistances are known. One is variable resistance, which is also called the rheostat of the circuit, and two known resistances. It also contains the galvanometer for the detection of the current and it is also used to find the direction of current.