appliance – n. a machine (such as a stove, microwave or dishwasher) that is powered by electricity and that is used in people’s houses to perform a particular job

accurate – adj. able to produce results that are correct; not making mistakes

ferrous – adj. of, relating to or containing iron

magnetic field – n. of or relating to a magnet or magnetism; the magnetic effect of electric currents and magnetic materials

frequency – n. the number of times that something such as a sound wave or radio wave is repeated in a period of time

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