A stand-by generator is connected to fifteen 40 W lamps a...
A stand-by generator is connected to fifteen 40 W lamps and musician's 600 W amplifying system. How much energy is used if the generator runs for 6 hours?
3.84k Wh
7.20k Wh
8.40k Wh
12.00k Wh
14.56k Wh
Correct answer is B
Total power = (15 x 40) + 600
= 1200 watts
Energy(kWh) = 12001000 x 6
= 7.2 kwH
A quantity of steam at 100°C condenses to water at the same temperature by releasing 6.9 x 104J ...
The mass of a proton is approximately equal to that of ...
Which of the following is not self-luminous? ...
The phenomenon that shows that increase in pressure lowers the melting point can be observed in ...
The ratio of the coefficient of linear expansion of two metals ∝1/∝2 is 3:4. If, when heated thr...