A 230 V/100 W light bulb can also be used but then it is necessary to make a coil with 40 turns (you will notice this corresponds to an induced voltage of approximately 6 V/turn). The coil should be made of a thinner conductor (it is recommended to use the wire from network cabling or bell wire), for the turns are a maximum of 1 cm above the plate surface after the coil is placed on the plate. If the wire is too thin (enamelled wire), it can be burnt by the induced current