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[" When the current in a coil changes from "8" ampere to "2" ampere in "3times10^(-2)" sec "" ,the emf induced "],[" in the coil is "2" volt.The self-inductance of the coil (in "mH" ) is "],[[" 1) "1," 2) "5," 3) "20," 4) "10]]

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