Question

The dimensional formula of electric charge is:

Options

• \([A\,T^{-1}]\) (Ampere per unit Time)

• \([A\,T]\) (Ampere × Time)

• \([A^{-1}\,T]\)

• \([M\,A\,T^{-1}]\)

Answer 1

Since charge = current × time, its dimensional formula is \([A\,T]\), i.e., Ampere multiplied by Time. The inverse power or inclusion of mass does not apply to charge.