Question

If a, b, c and d are mass, length, time and current respectively, then $b^2 \, a/ c^3$ d has the dimensions of

• A. capacitance
• B. electric field
• C. permittivity
• D. electric potential

Answer 1

Answer: (D)

electric potential

Answer 2

$\frac{ ab^2 }{ c^3 d } = \frac{ [ M ] [ L^2 ] }{ [ T^3 ] [ A ] } = \frac{ [ ML^2 T^{ - 2} ] }{ [ AT ] }$ = $\frac{ work }{ charge } =$ electric potential