In other words, with the perfect setup, you could put a digital panel meter that reads the voltage in the circuit, and read the resistance directly. Zeroing it out would require more effort to get ...

Resistance ® close resistance (R)How difficult it is for current to flow. increases when components, for example a lamp, are added to a circuit in series. Potential difference close potential ...

In other words, the voltages around the circuit add up to the voltage of the supply. The total resistance of a number of resistors in series is equal to the sum of all the individual resistances.