Question

Which of the following groups has different dimensions?

• A. Potential difference, emf, voltage
• B. Pressure, stress, Young’s modulus
• C. Heat, energy, work done
• D. Dipole moment, electric flux, electric field

Answer 1

Answer: (D)

Dipole moment, electric flux, electric field

Answer 2

(1)Potential difference = [M¹L²T^–3A^–1] = voltage = emf

(2) Pressure, stress, young’s modulus,= [M¹L^–1T^–2]

(3) Heat, energy, work done = [M¹L²T^–2]

(4) Dipole moment = [L¹T¹A¹]

Electric flux = [M¹L³T^–3A^–1]

Electric field = [M¹L¹T^–3A^–1]