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.
Something pertinent is relevant and on-point. If you give your best friend pertinent advice, that means the advice is appropriate for the situation. Something pertinent is related to the current topic or situation â and probably helpful too. If you're in math class and you make a comment about World War I, that's likely not pertinent. If you're in music class and you talk about a cello, that probably is pertinent. Pertinent things are appropriate and logical. In most situations, people like to get comments and questions that are pertinent â anything else can just seem like a distraction.