Hello helpphysics,
I've been thinking about this problem a lot, and a couple of things are troubling me.
Is this a homework problem?
Is there anything missing in the problem statement, such as the radius, diameter, or cross sectional area of the coil? I see that the length is given. The length is useful if the coil is producing a magnetic field, but typically when discussing induced emf, something relating to the cross sectional area is given.
Are there any
other coils or solenoids involved in this problem?
The problem statement says, "Magnetic field is perpendicular to coil." Initially I took this to mean that the
cross sectional plane of the coil was perpendicular to the magnetic field (meaning the normal vector of the cross sectional area is parallel to the field). But thinking about it more, I think most people might interpret the problem statement as saying the
major axis of the coil is perpendicular to the magnetic field. But if that was the case, there would be no induced emf at all! All I'm saying is that "Magnetic field is perpendicular to coil" is kind of a weird way to state the problem.
The more I look at this problem, the more it seems that maybe something is missing.
