IMAT 2015 Q54 [Dimensional Consistency]

Which one of the following equations is dimensionally consistent (has consistent units)?

[All the symbols have their usual meanings:

v = velocity; F = force; m = mass; t = time; V = voltage; Q = charge; R_1, R_2, R_3, R_4 = resistance]

A. energy = (½mv^2) + Fv

B. resistance = R_1+ R_2 + (1/R_3) + (1/R_4)

C. temperature change = energy × m × specific heat capacity

D. acceleration = (½vt^2) + (F/m)

E. electrical current = (V/R_1) + (Q/t)