A 100-W light bulb is connected to a 110-V source. What is the resistance of this bulb?
A) 100 ?
B) 8.00 × 10-3 ?
C) 6.00 × 10-3 ?
D) 121 ?
E) 242 ?
D
You might also like to view...
Physicists find that the energy states of atoms are
A) discrete. B) circular. C) elliptical. D) chaotic.
A copper wire of 1.0 cm2 cross-sectional area would have to be how long to have a resistance of 1.0 ohm?
A) 5.9 m B) 5.9 Mm C) 5.9 km D) 5.9 × 102 m E) 5.9 × 104 m
The geologic time scale is broken up into time units of different sizes based on
A) eons, eras, periods, and epochs. B) changes in fossilization. C) visible and nonvisible life forms. D) major changes in life forms.
The very first generation of star systems in the universe must have been born from gas that consisted entirely of hydrogen and helium (and no other elements). Which of the following statements is most likely to have been true about these first-generation star systems?
A) They had terrestrial planets but no jovian planets. B) They did not have any planets or asteroids or comets. C) They had asteroids and comets but no large planets. D) They did not have and disks of gas around them as they formed.