SSC
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
A 60W bulb uses 60J every second and is 5% efficient. How mush energy is WASTED?
|
|
60J
|
|
|
5J
|
|
|
57J
|
|
|
3J
|
Explanation:
Detailed explanation-1: -Energy=Power×Time=60×60=3600Ws=3600 J.
Detailed explanation-2: -FALSE-Power is the energy per time ratio. A 60-Watt bulb would consume 60 Joules of energy in 1 second, 120 Joules of energy in 2 seconds, and 30 Joules of energy in 0.5 seconds.
There is 1 question to complete.