An electric current flowing in a wire creates a magnetic field around the wire, due to Ampere's law (see drawing below). To concentrate the magnetic field, in an electromagnet the wire is wound into a coil with many turns of wire lying side by side.he magnetic field of electromagnets in the general case is given by Ampere's Law : which says that the integral of the magnetizing field H around any closed loop of the field is equal to the sum of the current flowing through the loop.
The Difference Between Bylaws & Policy. When a company incorporates, there are two main parts of the incorporation paperwork: the articles of incorporation and the bylaws. When a board of directors or top management of a company or organization meets to make decisions, they set policy. Function of Bylaws.
Policy is made on behalf of the public. Policy is oriented toward a goal or desired state, such as the solution of a problem. Policy is ultimately made by governments, even if the ideas come from outside government or through the interaction of government and the public. Policymaking is part of an ongoing process that does not always have a clear beginning or end, since decisions about who will benefit from policies and who will bear any burden resulting from the policy are continually reassessed, revisited and revised.