The magnetic field of an electromagnet. The magnetic field around an electromagnet is just the same as the one around a bar magnet. It can, however, be reversed by turning the battery around.Unlike bar magnets, which are permanent magnets, the magnetism of electromagnets can be turned on and off just by closing or opening the switch.1  Page.2  1.he magnetic field around an electromagnet is just the same as the one around a bar magnet. It can, however, be reversed by turning the battery around. Unlike bar magnets, which are permanent magnets, the magnetism of electromagnets can be turned on and off just by closing or opening the switch. 1  Page. 2  1.
Pertinent is an adjective which means relevant to the issue at hand. It is synonymous to appropriate, fitting, applicable and suitable. Pertinent is an adjective which means relevant to the issue at hand. It is synonymous to appropriate, fitting, applicable and suitable.
2. denotation-the most direct or specific meaning of a word or expression; the class of objects that an expression refers to; the extension of `satellite of Mars' is the set containing only Demos and Phobos. reference, extension.. the explicit or direct meaning or set of meanings of a word or expression, as distinguished from the ideas or meanings associated with or suggested by it. Compare connotation (def. 2). 2. the act or fact of denoting; indication.