Its accuracy depends on uniformity of the wire. Proper polarity must be observed while making connection with the batteries to avoid damage to the potentiometer. Construction: The circuit diagram of a Crompton d. The effect of a very long slide-wire is achieved by connecting a number of resistance coils in series with a comparatively short slide-wire. This is the modified version of the slide-wire potentiometer where in calibrated dial resistors with a small circular wire of one or more turns are used thereby reducing the size of the instrument.
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