(i) Pressure (Nm²) (ii) Torque (Nm) (iii) Current (A) (iv) Power (Js⁻¹) Which of the above are the c

JAMB Physics 2023 325 views
Source: JAMB · 2023

(i) Pressure (Nm²)
(ii) Torque (Nm)
(iii) Current (A)
(iv) Power (Js⁻¹)
Which of the above are the correct S. I. Units of the quantities indicated?

  1. (i), (iii) and (iv) only
  2. (i), (ii) and (iii) only
  3. (ii), (iii), and (iv) only ✓
  4. (i), (ii), (iii) and (iv) only
Explanation

Torque is force × distance, so its unit is N m. Current is in amperes (A). Power is energy per second, so J s⁻¹ (watt) is correct.

Pressure is force per area, so its unit is N m⁻² (pascal), not N m². That makes (i) wrong. So (ii), (iii) and (iv) only are correct.

Was this explanation helpful?

Something wrong or missing? Tell us — we read every report and fix issues fast.

pastQuestions.ng pastquestions.ng