This is a very sound stupid question, but I'll go ahead anyway.(adsbygoogle = window.adsbygoogle || []).push({});

Current is defined as the displacement of charge through a cross-section of a conductor per unit time. Okay. But how does relate to its math-definition, current = change of charge with respect to time, I=dQ/dt? I mean, for every charge leaving the cross-section of the conductor, an equivalent one will enter. This means that across the cross-section dQ/dt, the summed change of charge with respect to time, equals 0!

I find I = Q/t, current = amount of charge passing the cross-section per unit time, a much more intuitive definition..

So can you guys help me make sense of this?

**Physics Forums - The Fusion of Science and Community**

# Definition of current

Know someone interested in this topic? Share a link to this question via email,
Google+,
Twitter, or
Facebook

Have something to add?

- Similar discussions for: Definition of current

Loading...

**Physics Forums - The Fusion of Science and Community**