what is the difference between magnetic flux density and magnetic field intensity?
Magnetic flux , represented by the Greek letter Φ (phi), is a measure of quantity of magnetism, taking into account the strength and the extent of a magnetic field. The SI unit of magnetic flux is the weber is the magnetic flux, B is the magnetic field,d S is an infinitesimal vector and the magnetic field is the area around the magnet, where a magnetic needle experience a torque and rests in a definite direction is called magnetic field.