The picture shows an electric cooker hob. The simplified circuit diagram shows how the four heating elements connect to the mains electricity supply. The heating elements are identical.
When all four heating elements are switched on at full power the hob draws a current of 26 A from the 230 V mains electricity supply.
Calculate the resistance of one heating element when the hob is switched on at full power. Give your answer to 2 significant figures.
are the heating elements in series? if so, the current running through each element is the same (26A) and the voltage is equally shared between elements (230/4= 57.5V). Put those values into the equation V=I^2R and do a bit of rearranging and you should get the resistance of one element.