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MHT CET Physics question

PhysicsCurrent ElectricityMHT CET

Potential difference across terminals of a particular battery is measured in two way. First with potentiometer which indicates 1.5 V and then with voltmeter which indicate 1.48 on a 2 V scale. If voltmeter has resistance , the internal resistance of the battery is

Answer: (C)

Solution

The potentiometer gives the emf V and the voltmeter gives the terminal p.d. V, so

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Question ID VK-045165