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.
The law is the  supreme authority and no one can go above it.   Rule by law is means that no one is immune to the law set by the  government. The government use the law in the most convenient way  for them to govern a particular state, meaning, they set the rules  and they are the supreme authority.They use the law to meet their  own needs. The law is a tool of government.ot so much for rules, which are â¦ still important, but are usually set by people for health, safety, etc. it is not illegal, as such, to break the rules, although it is still important to abide by them and the law. that is my description of the difference between the two.