Lesson: Design of the Ohmmeter Physics • Third Year of Secondary School

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In this lesson, we will learn how to describe the combining of a galvanometer with fixed and variable resistors to design a dc ohmmeter.

Students will be able to

describe the appropriate connection of a galvanometer and fixed and variable resistors to produce an ohmmeter,
explain the required resistance ratio of the fixed and variable resistors,
explain the nonlinear variation of the arm deflection of an ohmmeter with linear change in measured resistance.