* [I] represents the dimension of electric current, which is measured in Amperes (A).

* [T] represents the dimension of time, which is measured in seconds (s).

This can be derived from the definition of electric current:

* Current (I) = Charge (Q) / Time (T)

Therefore, we can rearrange this equation to find the dimension of charge:

* Charge (Q) = Current (I) * Time (T)

This gives us the dimension of charge as [I T].

Note: The SI unit of charge is the Coulomb (C), which is equivalent to one Ampere-second (A·s).