Magnetic flux is a measure of the strength of a magnetic field passing through a given area. It is represented by the symbol Φ and is measured in units of webers (Wb).
Magnetic flux is calculated by multiplying the strength of the magnetic field (B) by the perpendicular area (A) that the field passes through. The formula for magnetic flux is Φ = B*A.
Field lines are imaginary lines that represent the direction and strength of a magnetic field. They are drawn such that their direction is tangent to the field at any given point, and the density of the lines indicates the strength of the field.
No, magnetic field lines cannot cross each other. This is because they represent the direction of the field at a given point, and the direction cannot be two different values at the same point.
Magnetic flux can induce electrical currents in conductors that are moving through a magnetic field or have a changing magnetic field passing through them. This is known as electromagnetic induction and is the basis for many electrical devices, such as generators and transformers.