If we apply a continuously changing current to a coil of wire, we will have a continuously changing magnetic field within it. Transformer designers use different techniques to prevent this as the heating is just wasted energy. In this project we will directly make use of this heating effect and try to maximise the heating effect produced by the eddy currents. Most transformers have a metallic core and will therefore have eddy currents induced into them when in use. The effects of induction are used in transformers for converting voltages in all sorts of appliances. The heat generated is proportional to the current squared multiplied by the resistance of the material. ![]() When a magnetic field changes near a metal or other conductive object, a flow of current (known as an eddy current) will be induced in the material and will generate heat.
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