Question

The amount of charge flowing through a particular point in a conductor is represented by the equation

Q = at³ + bt + c,

where

a = 4.00 A/s²,

b = 5.00 A,

and

c = 7.00 A · s.

Determine the current density at

t = 0.300 s

if the cross-sectional area of the conductor at the point of consideration is 1.80 cm².
A/m²

Answer 1