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VMMC VMMC Medical Solved Paper-2003

  • question_answer
    An electric motor exerts a force of 40 N on a cable and pulls it by distance of 30 m in one minute. The power supplied by the motor (in watt) is:

    A)  10         

    B)                         2                            

    C)         200                       

    D)         20

    Correct Answer: D

    Solution :

    Work done by the force is W = force \[\times \] distance \[=40\times 30=1200\,\text{J}\] Therefore, power supplied by the motor is \[P=\frac{W}{t}\]             \[=\frac{1200}{60}=20\,\,W\]


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