Even though the drift velocity of the electrons is very small,a bulb burns almost at the same instant when the switch is ON.Why?

Even though the drift velocity of the electrons is very small,a bulb b

1.	Even though the drift velocity of the electrons is very small,a bulb burns almost at the same instant when the switch is ON.Why?
Answer» Solution :As soon as the switch is ON, electric field is set up throughout the CONDUCTOR ALMOST instantly with the speed of LIGHT and the electrons in every PART of the conductor begin to DRIFT.

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Even though the drift velocity of the electrons is very small,a bulb burns almost at the same instant when the switch is ON.Why?

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