WAEC Physics 2012 Objective — Question 14
Question 14 of 50 from the West African Examinations Council (WAEC) Physics 2012 Objective paper, with the correct answer and a full explanation.
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Which of the following statements correctly defines a simple machine? A device that
- A. A. can produce electric current
- B. B. can only carry people from one place to another
- C. C. with which work can be done easilyCorrect
- D. D. changes the state of rest or of uniform motion of an object
Explanation
A machine is a device that enables mechanical work to be performed easily, e.g. the lifting of a heavy load with a relatively small force.
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