The biggest difference between a motor and a generator is that, in a motor, current passes a power source, through the brushes, then the commutator. In a generator, current passes the slip rings, through the brushes, a device where the electricity is collected.

In a generator, current leaves the rotating part through the slip rings and brushes, then goes to the external device or circuit where the electricity is collected. So the sentence should say current passes “to a device where the electricity is collected.”

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