- #1

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i mean if there is a circular arc and magnetic field at the centre changes with time then will there be any induced emf in the arc ?????????

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- Thread starter phymatter
- Start date

- #1

- 131

- 0

i mean if there is a circular arc and magnetic field at the centre changes with time then will there be any induced emf in the arc ?????????

- #2

- 17

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Magnetic fields travel through space.

They like to travel through some materials better than others(Ferric), so you can guide them with the right material.

Definition/Summary

Flux sometimes means total flow through a surface (a scalar), and sometimes means flow per unit area (a vector).

In electromagnetism, flux always means total flow through a surface (a scalar).

Scalar flux is the amount of a vector field going through a surface: it is the integral (over the surface) of the normal component of the field:

For a closed surface, this equals (Gauss' theorem, or the divergence theorem) the integral (over the interior) of the divergence of the field: .

Therefore the scalar flux, through a closed surface, of an electric field is proportional to the enclosed charge (Gauss' law: ), and of a magnetic field is zero (Gauss' law for magnetism: ).

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