A wire connected to a bulb does not glow,wher | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The filament of the bulb and the connecting wires are connected in series,so the same current flows through both.According to Joule's law of heati

Vedclass · Accepted Answer

The filament has high resistance compared to the connecting wire.

Vedclass · Answer

(B) The filament of the bulb and the connecting wires are connected in series,so the same current flows through both.According to Joule's law of heating,the heat produced is given by $H = I^2Rt$.Since the resistance $(R)$ of the connecting wires is negligibly small compared to the resistance of the filament,the heat produced in the wires is negligible.Conversely,the filament has a high resistance,which leads to a significant amount of heat production,causing it to glow.Therefore,the bulb glows while the connecting wires remain cool.

$A$ wire connected to a bulb does not glow,whereas the filament of the bulb glows when the same current is passed through them. Why?

Similar Questions

On which of the following factors does the resistance of a conductor depend?

Two electric circuits $I$ and $II$ are shown in the figure.
$(i)$ Which of the two circuits has more resistance?
$(ii)$ Through which circuit does more current pass?
$(iii)$ In which circuit is the potential difference across each resistor equal?

Why is tungsten metal selected for making filaments of incandescent lamps?

Which of the following materials has the highest number of free electrons?

How will you conclude that the same potential difference (voltage) exists across three resistors connected in a parallel arrangement to a battery?

Vedclass Test Series

Exam Paper Generator

Online Exam Module