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Q.

60 W power means the device uses 60 Joule of energy in ____ second(s).


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Detailed Solution

60 W power means the device uses 60 Joule of energy in 1 second(s).
Power is defined as the rate of doing work. It can also be defined as the amount of energy a device uses per unit of time.
P=EnergyTime
⇒time=Energypower
Watt is the SI unit of Power.
given: Power(P)=60 W
Energy(E)=60 J
⇒time=60 J60 W 
⇒ time = 1 second
So, the device rated 60 W uses 60 J energy in 1 second.
 
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