Question

in Faraday's law, it is said that there is a changing magnetic flux.. what does changing magnetic flux mean? is it the field lines that are changing? can someone illustrate with a diagram??

Answer 1

u see faraday visualized magnetic field using lines of force. it is only an aid to understand and feel comfortable and does not necessarily mean there are lines of force emanating from a magnet or a charge. but u can say a magnetic line of force is the path travelled by a north pole in a magnetic field and in sense it means the direction of the field at all the points. so flux changes due to movement of the cause of the field or change in the strength of the field