Question

The dimensional formula for electric charge per unit length is

Answer 1

In SI ampere is one of the fundamental units. Now, charge( in coulomb)= current ( in ampere)x time( in second). So dimensional formula for an electric charge is AT.

Answer 2

✨Heya dear!✨

In SI unit system unit of electric current i.e.ampere(A) is taken as fundamental unit.

Electric current is charge flowing per unit time.

I=Q/t

Q=It

Therefore [Q]=A^1

T^1

where T is unit of time(seconds)

Dimensional formula of a quantity is denoted by the quantity enclosed in square brackets.