Question 4 — A student forgot to remove the - Questions at the end of the chapter - Chapter 3 Class 7 - Electricity: Circuits and their Components

Last updated at August 17, 2026 by

Q4 (Medium): A student forgot to remove the insulator covering from the connecting wires while making a circuit. If the lamp and the cell are working properly, will the lamp glow?

Answer:
We have studied that insulators do not allow electric current to pass through them. This is why the lamp will not glow.

  • Plastic covering acts as insulator material
  • Current cannot flow through insulated wires
  • Circuit remains incomplete due to insulation barrier
  • Bare wire ends needed for proper connection
Effect of Wire Insulation Wire covered Plastic insulation on wire Current blocked Insulator stops current flow Circuit broken No complete path formed Lamp does not glow
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