The dimension of electromotive force are?
A
ML2T-3I-1
B
ML2T-3I-2
C
M2LT-2I-1
D
M2L2T-1I-1
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
Electrical work W = QE,
Where Q is the quantity of change and E is the electromotive force.
∴ E = W = FxDQ_It
Where D is the displacement,I = current and t = time
But dimension of force,
= unit of mass x unit of Acceleration
= unit of mass xunit of velocityunit of time
= unit of mass x unit of displacement__unit of time x unit of time
ML/T2 = MLT-2
∴ Dimension of emf E
= MLT-2L = ML2T-3I-1__IT
Source: WAEC / JAMB / NECO Classroom Archive (Record #14482)