Question 8 — In Fig. 3.20, in which case(s) - Questions at the end of the chapter - Chapter 3 Class 7 - Electricity: Circuits and their Components

Last updated at August 17, 2026 by

Q8 (Medium): In Fig. 3.20, in which case(s) the lamp will not glow when the switch is closed?

Answer:
We have studied that complete circuit is needed for current flow . This is why lamp won't glow in cases with circuit breaks.

  • Broken wire prevents current flow
  • Wrong cell connections stop current flow
  • Damaged components create circuit gaps
  • All connections must be properly made
Circuit Analysis Cases Lamp Glows Lamp Won't Glow Complete circuit Broken wire Proper connections Wrong cell polarity Working components Damaged lamp
Remove Ads
Teachoo · Class 7 Explore Class 7
CA Maninder Singh's photo - Co-founder, Teachoo

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. At Teachoo, he simplifies Accounts, Tax and GST with step-by-step examples so students can apply concepts confidently in exams and real life.

For an uninterrupted learning experience, students can use Teachoo Black to remove ads and focus better.