Revision: Practical Electricity Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 17 Practical Electricity - Revision Quiz Test your understanding of Practical Electricity here: 1 / 5 1) An electric heater is connected to the mains using insulated copper wires. The wires become very warm. What can be done to prevent so much heat from being produced in the connecting wires? Use thinner copper wires. Use thicker copper wires. Use thicker insulation. Use thinner insulation. 2 / 5 2) kWh is the unit for time power energy force 3 / 5 3) The diagram below shows a plug that is wrongly wired. It is connected to an electric iron which has a metal case. Which of the following is TRUE? The main circuit breaker will trip as soon as the iron is switched on. The metal case of the electric iron will become ‚"live". The 13 A fuse in the plug is likely to blow as soon as the iron is switched on. The iron will not be able to work. 4 / 5 4) Which of the following circuit diagrams shows a heater correctly connected for its safe operation? 5 / 5 5) A computer is marked as "230 V, 150 W". It is used on a ring main socket marked "30 A Max". Which is the correct fuse to put in the plug of the computer power cable? 3 A 30 A 13 A 1 A Your score is Restart quiz
