The electromagnet and the electric bell

Lessons 28–29 · 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.

Draw the structure of an electromagnet and name its parts.

Give 5 examples of the use of electromagnets.

A coil has 3 layers of wire with 40 turns in each. How many turns in all?

Write the working order of an electric bell in 5 steps.

Ask an adult which source your home bell works from and write it; do not touch its inside.