Q. The dimensions of electric potential are
A) $\left\lbrack {ML}^{2}T^{- 2}Q^{- 1} \right\rbrack$
B) $\left\lbrack {MLT}^{- 2}Q^{- 1} \right\rbrack$
C) $\left\lbrack {ML}^{2}T^{- 1}Q \right\rbrack$
D) $\left\lbrack {ML}^{2}T^{- 2}Q \right\rbrack$
Explanation
Electric potential $V = \frac{W}{q} = \frac{joule}{coulomb} = \frac{newton \times metre}{coulomb}$ $\ \ = \frac{\left( kg - ms^{- 2} \right) \times m}{coulomb}$ $= kg - {ms}^{- 2} \times m \times {coulomb}^{- 1}$ $\therefore\ \ \ \ = \left\lbrack ML^{2}T^{- 2}Q^{- 1} \right\rbrack$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.