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Subject Variable Resistor Remove constraint Subject: Variable Resistor

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  1. Variable resistors are also known as potentiometers. Potentiometers are used to measure electromotive force (emf) by balancing it with a known emf. The concept was first developed in 1841 by J. C. Poggendorff and…

  2. Variable resistors are also known as potentiometers. Potentiometers are used to measure electromotive force (emf) by balancing it with a known emf. The concept was first developed in 1841 by J. C. Poggendorff and…