USB input gives out 10V, but it should be 5V, why?

Question

Do it yourself

Hello!
My multimeter shows that the USB gives out 10V, although all the sites say that the USB of the laptop is 5V. I don't understand something, right? why is that?
Thanks in advance for your reply!

Answer 1

try testing under load

Answer 2

I join Artem
plus:
4. the battery in the multimeter is dead

Answer 3

Most likely dirt under the krutilki. You need to turn back and forth quickly. The same happens to me sometimes.

Answer 4

And don't forget Ohm's law

Answer 5

In usb, not a laptop is also supposed to be 5, unless someone messed up and soldered it with a special 220))
This is, as it were, a good tone. You do not expect in a regular outlet 5 or 600 constant. As well as 110. Seeing the outlet, you assume that there is a variable 220 5 50, although this is just a piece of iron and you can breed anything.
So yes - the shrunken crown of the multimeter moves him to a fantastic lie.