Final answer:
In a hair dryer, if the current follows a single path through the heater and the fan, the circuit in the hair dryer is connected in a series.
Step-by-step explanation:
In a hair dryer, if the current follows a single path through the heater and the fan, the circuit in the hair dryer is connected in a series.
When components in a circuit are connected in series, they are connected end-to-end, with the current having only one path to flow through. In this case, the current flows through the heater and the fan in a single loop.
Series circuits are commonly used in hair dryers and other electrical appliances, as they ensure that all components receive the same current.