Question Detail
Question
Which of the following physical quantities do not have the same dimensions?
Correct Answer
Option D is the correct answer.
Detailed Explanation
Electric dipole moment has dimensions [L I T]. Electric field has [MLT⁻³I⁻¹]. Flux (electric) has [ML³T⁻³I⁻¹]. So they are different. Others: pressure, Young's modulus, stress all [ML⁻¹T⁻²]; emf, voltage, potential all [ML²T⁻³I⁻¹]; heat, work, energy all [ML²T⁻²].
Hint
Check dimensions of electric dipole moment vs. electric field.