Q. The dimensions of time constant are
A) $\lbrack M^{0}L^{0}T^{0}\rbrack$
B) $\lbrack M^{0}L^{0}T\rbrack$
C) [$MLT$]
D) None of these
Explanation
Time constant in an $R - C$ circuit $\tau = R - C$ $\lbrack\tau\rbrack = \lbrack R\rbrack\lbrack C\rbrack$ $= \left\lbrack ML^{2}T^{- 3}A^{- 2} \right\rbrack\lbrack M^{- 1}L^{- 2}T^{4}A^{2}\rbrack$ $= \lbrack M^{0}L^{0}T\rbrack$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.