E TEST- Current
When does a current exist?
whenever there is a net movement of electric charge through a medium
Current equation
I = (pheta) q / (pheta) t
I
Electric current (A)
(theta) q
charge passing through the given area (Coulombs)
(theta) t
time interval (secs)
What is the SI unit for current?
the ampere
An Ampere
one ampere is the equivalent of one Coulomb of charge passing through a cross-sectional area
Little m
multiply by 10 -3
little upside down h
multiply by 10 -6