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[" 5.A coil of resistance "400Omega" is ...

[" 5.A coil of resistance "400Omega" is placed in a magnetic field.If the magnetic flux "phi" (Wb) "],[" linked with the coil varies with time "t(s)" as "phi=50t^(2)+4" .Current at "2s" is "],[[" 1) "0.5A," 2) "0.1A," 3) "2A," 4) "1A]]

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