In circuit as shown in figure when switch is moved to ON position then which of the following is possible ?
A
Bulb A will glow first
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B
Bulb B will glow first
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C
Bulb C will glow first
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D
All Bulb will glow together
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Solution
The correct option is C All Bulb will glow together All bulbs are connected in series we know that current is the same in series.
Just consider flow of electricity like a metal chain. When you pull at one end of the chain the entire chain moves. The electrons are linked in a similar way, if one begins to move through the circuit, it will push the electron in front of it and pull the electron behind it. Since all the electrons around the circuit move instantaneously at the same time by the "chain" principle all the lights should light up at the same moment.