The circuit below contains 4 100-W light bulbs. The emf is 110 V. Which light bulb(s) is(are) brightest?
A. A
B. B
C. C
D. D
E. C and D
Answer: B
You might also like to view...
As the universe cooled, it eventually reached a temperature of 3,000 K and protons were able to capture and hold electrons to form neutral hydrogen. This process is known as
a. ionization. b. isotropy. c. annihilation. d. recombination. e. hydration.
Light from a helium-neon laser (? = 632.8 nm) is incident upon a 0.200-mm-wide slit. Find the total width of the central maximum 2.00 m from the slit.
What will be an ideal response?
A sound level of 80 dB has ___________ the amplitude of a 60 dB sound
a. ten times b. twenty times c. one tenth d. twice
Consider two long, straight parallel wires, each carrying a current I. If the currents are flowing in opposite directions:
a. the two wires will attract each other. b. the two wires will repel each other. c. the two wires will exert a torque on each other. d. neither wire will exert a force on the other.