# What is the magnetic flux in the case when the plane of the contour is located along the lines of magnetic induction?

September 14, 2021 | education

| If the contour is oriented along the lines of magnetic induction, then the normal to the contour will be directed perpendicular to the lines of induction. The magnetic flux Ф is found by the formula:

Ф = B * Sк * cos a, where B is the absolute value of the induction vector, Sк is the area of the contour, a is the angle between the normal to the contour and the induction vector.

In our case, a = 90 ° and the factor cos a = cos 90 ° = 0, and therefore the product B * Sк * cos a is equal to zero.

Answer: Flow Ф = 0.

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