Physics: Wheatstone bridge
A Wheatstone bridge is a device which is used to find the unknown resistance.1,3 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.1-4 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.
By submitting manuscripts to SAJAA, authors of original articles are assigning copyright to the SA Society of Anaesthesiologists. Authors may use their own work after publication without written permission, provided they acknowledge the original source. Individuals and academic institutions may freely copy and distribute articles published in SAJAA for educational and research purposes without obtaining permission.
The work is licensed under a Creative Commons Attribution-Non-Commercial Works 4.0 South Africa License. The SAJAA does not hold itself responsible for statements made by the authors.