Hi, this may be really easy but.. I understand that to have an induced e.m.f , we can either have a rate of change of magnetic flux linkage ( ac source ) or cutting of flux ( like a plate oscillating and cutting through a magnetic field produced by a solenoid ). However does cutting of flux creates a rate of change of magnetic flux linkage ? Is rate of cutting of flux the same as saying rate of change of magnetic flux ? Or are they both different ?