AP EAMCET Engineering 17 Sep 2020 Shift 2 Paper

Section: Physics
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Question : 103 of 160
 
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The deflection produced in a tangent galvanometer whose coil has a resistance of 9 Ω is 30°.The potential difference across the coil is 4.5 V. If the number of turns in the coil is 10, the radius of the coil is _______(given BH=3.14×10−5T)
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