The Potentiometer-Internal resistance of a cell
 1) The resistance offered by the electrolyte between the two electrodes of the cell is: The internal resistance of the cell Potential difference of the cell E.M.F of the cell Sensitivity of the cell

 2) What is the shape of graph between internal resistance in X axis and external resistance in Y axis? Parabola Straight line Curve Hyperbola

 3) Which material is suitable for potentiometer wire? Manganin constantan Copper Manganin and constantan

 4) Which one of the following is a scalar quantity? current Voltage Potential difference Time

 5) What happens to the internal resistance of a cell when we increase the external resistance? Increases Decreases First decrease then increase First increase then decrease

 6) What is the device used to measure the potential difference? Voltmeter Metre bridge Potentiometer Galvanometer

 7) What is potential gradient? Fall of potential per unit voltage Fall of current per unit voltage Fall of potential per unit length Fall of current per unit length

 8) Why is a potentiometer preferred to a voltmeter to measure voltage in a circuit? Range of voltmeter is small compared to a potentiometer. Potentiometer is cheaper. No current is drawn by potentiometer during measurement. Potentiometer is handy compared to a voltmeter to measure voltage in a circuit.

 9) Which of the following is an example for secondary cell? Dry cell Lead accumulator Daniel cell Leclanche cell

 10) What is an example for a primary cell? All of these Daniel cell Leclanche cell Dry cell

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