Physics Work & Energy MDCAT 2018
PMDC Verified Question 84 of 108
The rate at which work is being done is called:
A
Power
B
Density
C
Energy
D
Force
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Power
Concept:

By fundamental physics definitions, power is the measure of how fast work is accomplished or energy is transferred.

Formula:

$$ P = \frac{\Delta W}{\Delta t} $$

Solution:

  • The term "rate" implies division by time.


  • Work divided by time is Power, measured in Watts (J/s).


Why other options are incorrect:

Energy is the capacity to do work, not the rate. Force is a push or pull. Density is mass per unit volume.

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