Question

The dimensional formula of intensity of electric field is

(A) [MLT²A^-1]

(B) [MLT^-3A^-1]

(C) [MLT^-3A]

(D) [ML²T^-3A^-1]

Answer 1

Correct option is (B) [MLT^-3A^-1]

The unit of electric field intensity is newton per coulomb i.e. N/C.

Newton is the unit of force and has dimensions \([MLT^{-2}]\).

Coulomb is the unit of charge and has the dimensions \([A^1T^1]\).

Hence the dimension of field will be \([MLT^{-3}A^{-1}]\).

Answer 2

The correct option is (B) [MLT^-3A^-1]