Magnetic Flux
Magnetic flux is defined as the total number of magnetic field lines through a given coil or area. It is the common component of the magnetic field which passes through the coil. Magnetic flux is denoted by ΦB where B is a magnetic field and its unit is Weber (Wb). The magnetic flux value depends on the magnetic field direction and it is a vector quantity.
The magnetic flux formula is given by,
Where,
B = Magnetic field,
A = Surface area and
θ = Angle between the magnetic field and normal to the surface.
Solved Example
Example 1
The Dimension of a rectangular loop is 0.50m and 0.60m. B and θ are 0.02T and 45° respectively. Determine the magnetic flux through the surface.
Solution:
Given
Dimensions of rectangular loop = 0.50m and 0.60m,
B = 0.02T
θ = 45°
Magnetic flux formula is given by
ΦB = B A Cos θ
Area, A = 0.50 × 0.60
= 0.3 m2
ΦB = 0.02 × 0.3 × Cos 45
ΦB = 0.00312 Wb
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