(Solution) - The transformer in the power supply for a computer s 500 GB -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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The transformer in the power supply for a computer?s 500-GB external hard drive changes a 120-V input voltage (from a regular house line) to the 5.0-V output voltage that is required to power the drive.
(a) Find the ratio of the number of turns in the primary coil to the number of turns in the secondary coil.
(b) If the drive is rated at 10 W when running and the transformer is ideal, what is the current in the primary and secondary when the drive is in operation?