COMEDK2012PhysicsWork, Power and Energy
If 120 ~J of work is done in 2 ~min by a water pump, then the power of the pump is
Options
- A14.4 ~kW
- B240 ~W
- C60 ~W
- D1 ~W
Correct answer
D. 1 ~W
Step-by-step solution
Given, work done, W=120 ~J Time, t=2 ~min =2 60=120 ~s Power = Work done Time = W t = 120 120 =1 ~W