2
Question
Figures below show a cell connected to a bulb different types of material. State with a reason in which case the bulb will glow and not glow:
Figure
Figure
Open in App
Solution
(a) The bulb will not glow. This is because the rubber band is an insulator and the circuit is incomplete.
(b) The bulb will not glow because jute and silk threads don't conduct electricity.
(c) The bulb will glow in this case, as the circuit is completed by the copper wire, which is a good conductor of electricity.
(d) The bulb will not glow because the circuit is open.
(e) The bulb will not glow, as cotton does not conduct electricity.
(f) The bulb will not glow because of the plastic piece which is an insulator.
(b) The bulb will not glow because jute and silk threads don't conduct electricity.
(c) The bulb will glow in this case, as the circuit is completed by the copper wire, which is a good conductor of electricity.
(d) The bulb will not glow because the circuit is open.
(e) The bulb will not glow, as cotton does not conduct electricity.
(f) The bulb will not glow because of the plastic piece which is an insulator.
Suggest Corrections
0
