This document contains instructions for physics problems involving electromagnetism and circuits. It asks the reader to: state Ampere's circuital law and use it to find the magnetic field of a straight conductor; find the magnetic field due to a current-carrying solenoid; obtain an expression for the maximum kinetic energy of a charged particle in a cyclotron; calculate the magnetic force between two straight parallel conductors and use it to define the standard ampere; calculate the force on a charged particle in an electric field and determine the nature of its path; and explain how to convert a galvanometer into an ammeter and obtain an expression.