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The circuit consists of a potentiometer P of total resistance 10 Q and a fixed resistor Q of resistance 10 Q. The battery has

 

The circuit consists of a potentiometer P of total resistance 10 Q and a fixed resistor Q of resistance 10 Q. The battery has an e.m.f. of 4.0 V and the voltmeter has a very high resistance. A The slider on the potentiometer is moved from X to Y and a graph of voltmeter reading V is plotted against slider position. Which graph would be obtained? V 4- 2- 2- I 4.0V O O B D 4 2- 4- 2-

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