A hair dryer draws 1 350 W, a curling iron draws 700 W, and an electric light fixture draws 550 W. If all three of these appliances are operating in parallel on a 120-V circuit, what is the total current drawn?
a. 7.22 A
b. 21.7 A
c. 2.09 A
d. 27.5 A
e. 11.3 A
b
You might also like to view...
The reason that evaporation is a cooling process is
A) radiation of heat during the process. B) due to conduction and convection. C) the more energetic molecules escape the liquid. D) all of the above E) none of the above
In years of heavy snow pack in the mountains it is sometimes desirable to induce early melting of the snow, rather than wait until it all melts suddenly and causes floods
It has been suggested that a way to accomplish this might be to have planes fly over the snow fields and sprinkle them with black soot. What do you think of this idea? Would it work? A) Yes, it would probably work because the black surface would be a better absorber of sunlight than would the white snow. B) Yes, it would work because the soot would raise the melting point of the snow. C) Yes, it would work because the soot would decrease the specific heat capacity of the snow. D) No, it would not work because it is infrared radiation and not visible radiation which melts the snow. E) No, it would not work because sunlight has very little effect on how fast the snow melts.
The source of energy that powers the Sun is
A) chemical potential energy of hydrogen. B) mass energy released by nuclear fusion. C) gravitational potential energy of the contraction of the gas cloud that formed the Sun. D) kinetic energy of the orbital motion of the Sun. E) thermal energy of the hydrogen atoms in the Sun.
Wave Characteristics: A certain part of the electromagnetic spectrum ranges from 200 nm to 400 nm. What is the lowest frequency associated with this portion of the spectrum? (c = 3.00 × 108 m/s)
A. 1.50 × 1014 Hz B. 7.50 × 1013 Hz C. 7.50 × 1014 Hz D. 7.50 × 1015 Hz E. 1.50 × 1015 Hz