Physics Work & Energy PMDC 2021
PMDC Verified Question 71 of 108
kWh is the unit of
A
Force
B
Power
C
Time
D
Energy
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Energy
Concept:

Multiplying Power by Time gives Energy.

Formula:

$$ E = P \times t $$

Solution:

  • kW (Kilowatt) is Power.


  • h (hour) is Time.


  • Power \( \times \) Time = Energy. This is the unit used by electric companies to measure energy consumption.


Why other options are incorrect:

Students confuse "Watt" with Power, failing to notice the multiplication by hours.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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