JAMB Physics 2008 Objective — Question 1

Question 1 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2008 Objective paper, with the correct answer and a full explanation.

1. The dimensions of electromotive force are

A. ML²T⁻³I⁻¹Correct
B. ML²T⁻¹I²
C. M²LT²I¹
D. M²L²T¹I¹

Explanation

e.m.f = workdone/charge. Work = force x distance = mass x acceleration x distance = MLT⁻². L = ML²T⁻². Charge, q = IT. Dimensionally, e.m.f = ML²T⁻²/IT = ML²T⁻³I⁻¹.

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