Can I charge my iPhone or iPad with this power adapter using the USB-C to USB Adapter and a Lightning to USB Cable?

When charging the 12" MacBook, this power adapter puts out a higher voltage than suitable for iPhone or iPad.
Will that be reduced to 5 V when one of these devices is connected via the USB-C to USB Adapter?

29W USB‑C Power Adapter

29W USB‑C Power Adapter

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