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We observe the bulb glowing when the swi...

We observe the bulb glowing when the switch is 'ON'. Can we conculde that charges instantly move from the 'switch' to the bulb ? Discuss.

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In any electric circuit, wires made up of good conductors are used to connect different appliances. All conductors have free charges moving in all directions. When the switch is .ON., free charges throughout the circuit start moving in a specific direction instantly. Even though no charge moves from switch to bulb instantly, charges at the end of the conductor that are connected to the bulb start moving through the bulb when switch is .ON..
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