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08-02-2024
Physics

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A small piece of metal wire is dragged across the gap between the pole of a magnet in 0.4 s. If magnetic flux between the pole pieces is known to be 8×10⁻⁴Wb, then induced emf in the wire is
a.4×10⁻³V
b.8×10⁻³V
c.20×10⁻⁴V
d.6×10⁻³V

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