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CBSE Class 12 Physics 2014 Delhi Set 2 Paper

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Question : 8 of 8
Marks: +1, -0
A potentiometer wire of length 1.0m has a resistance of 15Ω. It is connected to a 5V battery in series with a resistance of 5Ω. Determine the emf of the primary cell which gives a balance point at 60‌cm.
Solution:  
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