Direct Current Circuits Out of Balance Wheatstone Bridge INTRODUCTION: The most accurate measurements of resistance are made with a galvanometer (or a voltmeter) in a circuit called a Wheatstone bridge, named after the British physicist Charles Wheatstone. This circuit consists of three known resistances and an unknown resistance connected in a diamond pattern. A DC voltage is connected across two opposite points of the diamond, and a galvanometer is bridged across the other two points. …showed first 75 words of 1221 total…

…showed last 75 words of 1221 total…stance. This concept has its advantages where the bridge can determine small resistance change. Hence, that even the slightest change in resistance that a normal meters could not detect, could be identified by the out-of-balance voltage. This experiment presents its usefulness for various uses of future electrical circuits. REFERENCE: 1. EDWARDS, D; HACKER, C (2001), Physics and Instrumentation Laboratory Manual, Griffith University. 2. EDWARDS, D; HACKER, C (2001), Physics and Instrumentation Lecture Notes, Griffith University