1. A magnetic field is perpendicular to a loop. The graph shows how the magnetic field changes as a function of time, with positive values for B indicating a field into the page and negative values a field out of the page. Several points on the graph are labelled. a) At which point or points is the magnitude of the flux a maximum? b) At which point or points is the magnitude of the flux a minimum? c) At which point or points is the flux changing most rapidly? d) At which point or points is the flux changing least rapidly (but non-zero)? e) Sketch the induced current versus time. On this plot label a-e and the direction of current by the sign: define clockwise flow as positive and counter-clockwise flow to be negative. questions