# If I supply more current than needed will my electronics fry [duplicate]

If I have a stepper motor and driver that require 5V and 240mA and I supply 5V at 3A will my circuitry die?

I have heard the expression that a motor "draws" the current that is needs, but I don't really know if that's true, and if it is true, how's does that even work? It does not seem to be the same for voltage.

I am very beginner with electricity so simpler is preferred thank you all for taking the time to answer I really do appreciate it

Edit: Apparently this is a frequently asked question, view the answer here or go to this page to see one of the largest community discussions on the topic

• This is actually our most frequent question of all time, electronics.stackexchange.com/questions/34745/… May 3, 2021 at 23:34
• @MarkU Thank you that post was a good discussion May 3, 2021 at 23:44

It's true that it is the LOAD that controls current flow, not the SOURCE

Here's an analogy...

On your house, there is a water valve that you use with a garden hose right? When you crack it open completely, you get a relatively light stream of water. Dad washes his car with it, maybe mom waters her roses.

However, if a fireman opens the hydrant at the roadside, you get enough water coming out to push a parked car backwards.

The source of the water pressure for both is the same water tower.