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[" A small piece of wire is passed throu...

[" A small piece of wire is passed through the gap "],[" between the poles of a magnet in "0.1" sec.An "],[" e.m.f.of "4times10^(-8)" volts is induced in the wire.The "],[" magnetic flux between the poles (in weber) is: "],[10],[4times10^(-9)],[hline4times10^(-2)],[hline0.1]

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