Hi everyone. I'm a new poster here, so hopefully this is in the right sub forum: I'm just interested in seeing if I've got the right idea with my differentiation of magnetic flux in order to find the induced current in a ring of wire, which has it's normal at, say 30° to a magnetic field (which is uniform but has magnitude changing with time). Lets say the area of the wire is A = π r^2 and the magnetic field strength changes with time according to B = c t^2, where c is a constant and t = time. Magnetic flux: Φ=AB cos 30° Φ= (π r^2) (c t^2) cos 30° Is it right to say I don't need to differentiate the cos 30, as that is just a constant? Infact, everything is a constant except t^2, therefore the rate of change of the flux is: dΦ/dt = (π r^2) (c 2t) cos 30° From here, I'm using Ohm's law, and dividing the above by the resistance of the wire, and I've got my induced current. Does that look right? Thanks!