Linear Potentiometer

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Linear Potentiometer has a similar function as the rotary potentiometer, but instead of the semi-circular resistance, there will be a linear resistor here with a sliding contact. The two ends of the linear resistor are connected across the source or input voltage, the output is taken between the sliding contact and anyone end of the linear resistor. The linear pots are commonly used for measuring the voltage across a branch of a circuit, for measuring the internal resistance of a battery cell and also for comparing a battery cell with a standard cell.