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Fundamental and Derived Units

Power is meas...

Question

Power is measure of the......

1. The rapidity with which work done2. Amount of energy required to perform the work. 2. The slowness with which work is performed 5. Length of time

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Solution

Options 1 and 2 are right
(i) the rapidity with which work is done
(ii) amount of energy required to perform the work

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Similar questions

Choose one or more correct alternatives.

a. For work to be performed, energy must be ....

(i) transferred from one place to another
(ii) concentrated
(iii) transformed from one type to another
(iv) destroyed

b. Joule is the unit of ...

(i) force
(ii) work
(iii) power
(iv) energy

c. Which of the forces involved in dragging a heavy object on a smooth, horizontal surface, have the same magnitude?

(i) the horizontal applied force
(ii) gravitational force
(iii) reaction force in vertical direction
(iv) force of friction

d. Power is a measure of the .......

(i) the rapidity with which work is done
(ii) amount of energy required to perform the work
(iii) The slowness with which work is performed
(iv) length of time

e. While dragging or lifting an object, negative work is done by

(i) the applied force
(ii) gravitational force

(iii) frictional force

(iv) reaction force

Two men A & B perform the same amount of work. B performs the work in 1/50^th of the time as compared to A. Calculate the ratio of their powers.

Q. A refrigerator with coefficient of performance

\frac{1}{3}

reales 200 J of heat to a reservoir. Then the work done on the working substance is:

Q. The amount of work done (or, energy spent) by a source of power

1 k W

1 h

Q. The term___refers to any computer component that is required to perform work.

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