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How does this system induce an emf? Watch

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    The diagram basically shows a meter fitted in a pipe and when fluid flows along the pipe the rotor turns and leads to the magnets sweeping past the coil.

    The graph shows that this induces a small emf in the coil but how does it do that because the magnetic field lines are not cutting the area of the coil? Also,
    at the max and min points where would the magnets be at that point?

    Thanks for any help in advance
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    (Original post by MSB47)
    The diagram basically shows a meter fitted in a pipe and when fluid flows along the pipe the rotor turns and leads to the magnets sweeping past the coil.

    The graph shows that this induces a small emf in the coil but how does it do that because the magnetic field lines are not cutting the area of the coil? Also,
    at the max and min points where would the magnets be at that point?

    Thanks for any help in advance
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    sorry hope this is better.
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