As more resistors are added in series to a constant voltage source (zero internal resistance), the power supplied by the source
A) does not change.
B) decreases.
C) increases.
D) increases for a time and then starts to decrease.
B
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A metal blade spins at a constant rate of 5.0 revolutions per second about a pivot through one end of the blade. This rotation occurs in a region where the component of the earth's magnetic field perpendicular to the blade is 30 ?T. If the blade is 60 cm in length, what is the magnitude of the potential difference between its ends?
a. 0.24 mV b. 0.20 mV c. 0.17 mV d. 0.27 mV e. 0.34 mV
As viewed from above or face-on, a ____________ spiral galaxy has many branches and spurs, making the arms less discernible
Fill in the blank(s) with correct word
What is the kinetic energy of an electron that passes undeviated through perpendicular electric and magnetic fields if E = 4.0 kV/m and B = 8.0 mT?
a. 0.65 eV b. 0.71 eV c. 0.84 eV d. 0.54 eV e. 1.4 eV
LCD stands for:
a. linearly collimated diffraction. b. longitudinally combined depolarization. c. liquid crystal display. d. lighted compact disk.