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 following diagram shows a correctly wired three-pin mains plug. Which of the following gives the correct colour code for the three wires? X: brownY: green-and-yellowZ: blue X: brownY: blueZ: green-and-yellow X: blueY: green-and-yellowZ: brown X: blueY: brownZ: green-and-yellow 2 / 5 2) A mains socket supply (240 V) is fitted with a 13 A fuse. What is the maximum number of heating coils, each rated at "240 V, 1000 W" that can be connected to the socket? 4 2 1 3 3 / 5 3) Which metal would be best for the heating element in an electric iron? nichrome copper iron steel Nichrome is a metal with high resistance. Typically used for high resistance wires. 4 / 5 4) 2018 S4 EOY P1 Q26 If a 10 A fuse can properly protect a rice cooker operating at 220 V, which of the following can be the maximum power of the rice cooker? 2000 W 500 W 4000 W 1000 W 5 / 5 5) Most hair dryers don't have an earth wire. Why is this so? The plug is installed with a fuse. The casing is plastic. The fan prevents the heating coil from becoming too hot. The current is too small. Your score is Restart quiz
