Aflat, rectangular coil measuring 0.10 m by 0.20m and containing 100 turms of wire is rotating at a constant speed of 100m rad/s in a magnetic field of 0.20 t. the maximum emf induced in this coil is approximately: a) 126 v b) 63 v c) 1.0 v d) 10 v e) 44 v

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?