The power supplied to a typical black-and-white television set is 82 W when the set is connected to 120 V.?
The power supplied to a typical black-and-white television set is 82 W when the set is connected to 120 V.
(a) How much electrical energy does this set consume in 1 hour?
(b) A color television set draws about 2.6 A when connected to 120 V. How much time is required for it to consume the same energy as the black-and-white model consumes in 1 hour?
a)
Energy = Power * Time
where energy is in joules, power in watts and time in seconds.
E = 82 W * 3600 s
E = 295200 J
[ 295.2 kJ ]
b)
Power used by color set = 120 v * 2.6 A = 312 W
Time = Energy / Power = 295200 / 312
Time = 946 s = 15.77 minutes
Reeps One: Insane DubStep / DnB BeatBox set at White Air 2009
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