An aquaculture breeding tank is heated using a submerged ceramic resistance heater. When operating at full capacity, the current in the heating element is 7.5 A and the heater has a power output of 1.6 kW.
Calculate the electrical resistance of the ceramic heating element.
Give your answer to two significant figures.
31 exam-style questions on Edexcel GCSE Physics 10.3 Electrical energy and power. Each one has a worked solution and a mark scheme showing where the marks go.