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Series circuits
Series circuit properties
1) Order of electric components
In a series circuit if we permute two different bulbs then each bulb maintains its brightness.
More generally:
In a series circuit, modifying the order of connection does not affect the way electric components operate.
2) Number of passive components
If we add a second bulb in a circuit including a bulb and a battery then the brightness decreases.
The brightness decreases even more if we add a third.
The result would be the same by adding a motor or a resistor instead of a bulb.
The more a series circuit includes passive components, the more its bulbs get brighter.
3) Burnt out bulb or unscrewed bulb
If a bulb is burnt out or is unscrewed in a series circuit including multiple bulbs then all bulbs stop to shine.
If a bulb burns out then the filament is broken and when a lamp is unscrewed there is no more contact between the bulb and the socket.
In both cases the circuit is open and the electric current can not flow.
Conclusion: In a series circuit if a bulb is burned out or unscrewed other passive components do not work anymore.
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