Electric heaters and a flat’s wiring

Lessons 26–27 · 2 lessons · Mehnat ta’limi (Texnologiya) – Labour Education (Technology), textbook for Grade 7 of general secondary schools. Ministry of Public Education of Uzbekistan. Sharq Publishing, Tashkent, 2016/2017 (authors not named in the extracted text)

Answers are for parents and teachers.

List 5 electric heating appliances at home (with an adult) and note their power.

Draw circuit diagrams for one and for two lamps.

How many kWh does a 1000 W heater use in 5 hours?

Write 6 rules of electrical safety.

Explain with a drawing how a thermal relay works, in 4 sentences.