A coil of unknown resistance is placed in the left Gap of meter bridge and a resistance R is placed in the gap .the null point is obtained 40 cm from left end .when a resistance of 10 ohm is connected in series with the coil and the same resistance R is kept in the right gap ,the null point is obtained at the center of the wire . find the resistance of the coil...
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sorry for answering unnecessarily. I am doing this for collecting points because I am having online exams from tomorrow and I have to ask doubts in brainly
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