The drift velocity of electrons in a conducting wire is of the order of 1 mm/s, yet the bulb glows very quickly after the switch is put on beause

The drift velocity of electrons in a conducting wire is of the order of 1mm//s , yet the bulb glows very quickly after the switch is put on because

The drift velocity of electrons inside a conductor carrying current is of the order of 10^(-4)m//s , which means that the electrons flow very slowly through the conductor. Then why does it not require hours for a light bulb to turn on after pressing the switch ?

The magnitude of drift velocity of free electrons in a conductor is very low, but an electric bulb glows instantly when the current is switched on. Explain the reason.

Assertion: Drift velocity of electrons developed in a current-carrying conductor is of the order of 10^(-4) m//s but current in the conductor is established almost instantly the switch is closed. Reason: Electric field in a conductor sets up with the speed of light.

A : The drift velocity of electrons in a metallic wire will decrease, if the temperature of the wire is increased. R: On increasing temperature, conductivity of metallic wire decreases.

Assertion : The drift velocity of electrons in a metallic wire will decrease, if the temperature of the wire is increased. Reason : On increasing temperature, conductivity of metallic wire decreases.

Assertion : The drift velocity of electrons in a metallic wire will decrease, if the temperature of the wire is increased. Reason : On increasing temperature, conductivity of metallic wire decreases.

(A): The drift velocity of electrons in a metallic wire will decrease, if the temperature of the wire is increased. (R): On increasing temperature, conductivity of metallic wire decreases.

A :The drift velocity of electrons in a conductor is very small still current in a conductor is establised almost instantaneously on closing the switch. R: Electric field in the condutor sets up with speed of light.