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 (If it
turn out to be a negative number, it implies a current in the backward
direction