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ohmmeter


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Any direct-reading instrument for measuring the value of a resistance in ohms. The instrument commonly used is a multimeter capable of measuring also both currents and voltages. To measure resistance a dry cell and resistor are switched in series with the moving coil galvanometer and the unknown resistance is connected across the instrument's terminals. The value of the resistance is then read off an ohms scale. Such instruments are increasingly being replaced by electronic digital multimeters.

Subjects: Physics.


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