the turn density is n=N/L = turns/m. If the current in the solenoid is I = amperes. and the relative permeability of the core is k = , then the magnetic field at the center of the solenoid is. B = Tesla = gauss. The Earth's magnetic field is about half a gauss.The relative permeability of magnetic iron is around 200.n the above expression for the magnetic field B, n is the number of turns per unit length, sometimes called the turns density.
Definition of con artist. : a person who tricks other people in order to get their money The couple lost their savings to a con artist who told them he was an investment broker.
conâ¢tracâ¢tion. 1. an act or instance of contracting. 2. the quality or state of being contracted. 3. a shortened form of a word or group of words, with the omitted letters often replaced in written English by an apostrophe, as isn't for is not, they're for they are, e'er for ever.