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) The earth wire is used to prevent excessive current flow. prevent the appliance from exploding. prevent electrical shocks. protect the appliance from fluctuating voltages. 2 / 5 2) 2024 S4 EOY P1 Q23 The diagram shows the correct connections of the earth, live and neutral wires in the 3-pin plug of a rice cooker. What is the effect if the live and neutral wires’ connections are interchanged? The metal body of the rice cooker will be live. The rice cooker will catch fire. The rice cooker will work as normal. The fuse will blow. 3 / 5 3) 2022 S4 EOY P1 Q21 Which statement is true about an electrical fuse? A fuse adjusts its resistance to regulate the amount of current in the circuit. A fuse disconnects the circuit when the temperature is high. A fuse protects the wiring and appliance from overheating. A fuse allows a high current through the circuit without overheating. 4 / 5 4) The current in an electrical appliance, when working normally, is 5.0 A. What is the current in each of the three wires connecting the appliance to the "mains"? Live wire: 5.0 ANeutral wire: 0.0 AEarth wire: 0.0 A Live wire: 5.0 ANeutral wire: 0.0 AEarth wire: 5.0 A Live wire: 5.0 ANeutral wire: 5.0 AEarth wire: 0.0 A Live wire: 5.0 ANeutral wire: 5.0 AEarth wire: 5.0 A 5 / 5 5) 1 kWh is equivalent to how many joules? 1000 J 60 000 J 3600 J 3 600 000 J Your score is Restart quiz
