The idea of current has been presented to me so many different ways I thought id try and find out a little more into what exactly is current.(adsbygoogle = window.adsbygoogle || []).push({});

Most places refer to a flow of charge as a current, seems good to me, but - I heard the current may flow outside the wire in... I want to say charge desnty fields but don't quote me on that... Is this is case? if so how?

Secondly the concept of "current flowing" seems to me very strage - if current = [itex]\frac{\delta q}{\delta t}[/itex] surely this implies the "current flow" people speak of is : [itex]\frac{\delta^2 q}{\delta^2 t}[/itex] ?

Thank you for your help.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# What exactly is current?

**Physics Forums | Science Articles, Homework Help, Discussion**