Question

initial flux relation with the distance iska formula

Answer 1

Answer:

Magnetic flux is a measurement of the total magnetic field which passes through a given area. It is a useful tool for helping describe the effects of the magnetic force on something occupying a given area. The measurement of magnetic flux is tied to the particular area chosen. We can choose to make the area any size we want and orient it in any way relative to the magnetic field.

If we use the field-line picture of a magnetic field then every field line passing through the given area contributes some magnetic flux. The angle at which the field line intersects the area is also important. A field line passing through at a glancing angle will only contribute a small component of the field to the magnetic flux. When calculating the magnetic flux we include only the component of the magnetic field vector which is normal to our test area.

If we choose a simple flat surface with area AAA as our test area and there is an angle \thetaθtheta between the normal to the surface and a magnetic field vector (magnitude BBB) then the magnetic flux is, [Explain]

\Phi = B A \cos{\theta}Φ=BAcosθ\Phi, equals, B, A, cosine, theta

In the case that the surface is perpendicular to the field then the angle is zero and the magnetic flux is simply B ABAB, A. Figure 1 shows an example of a flat test area at two different angles to a magnetic field and the resulting magnetic flux.

Figure 1: Magnetic flux through given areas (blue) oriented at an angle (left) and normal to (right) the magnetic field.

Explanation: