Nick89 said:The EMF is larger because the area of the enclosed circuit is larger. The magnetic field is NOT larger, it is constant.
The strength of a magnetic field at a specific point is determined by the amount of magnetic flux passing through that point. This can be influenced by factors such as the distance from the source of the magnetic field, the strength of the source, and the orientation of the field at that point.
In general, the strength of a magnetic field decreases as the distance from the source increases. This is because the magnetic flux spreads out over a larger area, resulting in a lower concentration of flux at a specific point.
The strength of the source directly affects the strength of the magnetic field at a specific point. As the source becomes stronger, the magnetic flux passing through a point closer to the source increases, resulting in a stronger magnetic field at that point.
The orientation of the magnetic field at a specific point can greatly impact its strength. If the field lines are perpendicular to the surface at that point, the magnetic flux will be concentrated and result in a stronger field. However, if the field lines are parallel to the surface, the flux will be spread out and result in a weaker field.
Aside from the distance, strength, and orientation of the source, other factors such as the presence of other magnetic fields or materials can also affect the strength of the magnetic field at a specific point. Additionally, changes in the source or the surrounding environment can also cause fluctuations in the strength of the field at a specific point.