Broken Apple Power adapter or Apple power supply?

Apple 29W USB-C Power Adapter, A1540

Apple 30W USB-C Power Adapter, A1882

Apple 61W USB-C Power Adapter, A1718, MNF72LL/A

Apple 87W USB-C Power Adapter, A1719, MNF82LL/A

Apple Duckhead Adapter, US, 607-2804

iMac Intel & G5 Power Cord

Power Mac G5 Power Cord

Apple 45W MagSafe Power Adapter for MacBook Air A1374 (AC 100-240 V, 45 Watt)

Genuine OEM Apple Macbook Pro 85W MagSafe 2 Power Adapter A1424

Macbook 60W Magsafe 2 Power Adapter

Macbook Air Adapter A1244 45W - Replacement Power Adapter

Original OEM Macbook Pro 85W MagSafe 1 Power Adapter

Used - Macbook 60W Portable Power Adapter

White Brick Style 65W Power Adapter M8943

White Brick Style Power Cord Extension for Apple Adapter

White Brick Style Power Cord Extension for Apple Adapter, Used

YoYo Style Power Adapter m7332

White Brick Style 45W Power Adapter M8482

YoYo Style Power Adapter M7332 (ibook/titanium)