Multiple choice

Which of the following is not a part of an electric bell?

  1. Electromagnet

  2. Filament

  3. Contact spring

  4. Armature

  5. Gong and hammer

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. A filament is a conducting wire or thread with a high melting point, forming part of an electric bulb.