The diameter of wire A is greater than the diameter of wire B, but their lengths and resistivities are identical. For a given voltage difference across the ends, what is the relationship between PA and PB, the dissipated power for wires A and B, respectively?
1. PA = PB
2. PA < PB
3. PA > PB
3
You might also like to view...
On a PV diagram, what kind of process is represented by a horizontal line with an arrow left to right?
A. Isochoric process B. Isobaric compression C. Adiabatic process D. Isothermal compression E. Isothermal expansion F. Isobaric expansion
Springs: An ideal spring with a force constant (spring constant) of 15 N/m is initially compressed by 3.0 cm from its uncompressed position. How much work is required to compress the spring an additional 4.0 cm?
A. 0.0068 J B. 0.012 J C. 0.024 J D. 0.030 J
The place the Sun stops its northward motion along the ecliptic is the:
A) equator. B) prime meridian. C) summer solstice. D) vernal equinox. E) node of the ecliptic.
If you double the frequency of the light in a laser beam, but keep the number of photons per second in the beam fixed, which of the following statements are correct? (There could be more than one correct choice.)
A) The power in the beam does not change. B) The energy of individual photons doubles. C) The energy of individual photons does not change. D) The intensity of the beam doubles. E) The wavelength of the individual photons doubles.