Arectangular coil of area 0.50 m by 0.80 m is positioned so that its crosssectional area is perpendicular to the direction of a magnetic field. the coil has 80 turns and a total resistance of 18.0 ω, and the field increases at a rate of 10.0 tesla/second. calculate the magnitude of the induced current in the coil.

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?