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Resistors in series.
A series connection means that there is only one path for the current i.e. through each resistor.
Rtotal = r1 + r2 + r3
Voltage over all three resistors is the sum of the three voltrmeter readings.
V = V1 + V2 + V3
Resistors in series are potential dividers but they are not current dividers i.e. the current is the same in all resistors connected in series.
The same current flows through each series resistor and the resistors are placed in series in order to increase the resistance and therefore decrease the current in a circuit. If one resistor burns out, all resistors cease to function.
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