Similarly, let q– be the net amount of negative
charge flowing across the area in the forward direction The net amount
of charge flowing across the area in the forward direction in the time
interval t, then, is q = q+– q– This is proportional to t for steady current
Chapter Three
CURRENT
ELECTRICITY
Rationalised 2023-24
Physics
82
and the quotient
q
I
=t
(3 1)
is defined to be the current across the area in the forward direction