How does adding a third resistor in series affect the current drawn from the battery?

When a third resistor is added in series to a circuit, the overall resistance of the circuit increases. In a series circuit, the total resistance is simply the sum of the individual resistances. According to Ohm's Law, the current flowing through a circuit is inversely proportional to the resistance when the voltage from the battery remains constant.

As the total resistance increases due to the addition of the third resistor, the current in the circuit decreases. This means that the more resistors you add in series, the more difficult it is for current to flow, leading to a lower current drawn from the battery. Thus, adding the third resistor in series effectively reduces the current flowing through the entire circuit.