The electrical conductivity of a metal is not proportional to which of the following?
(a) Free-electron density
(b) Electron mobility
(c) Electron charge
(d) Atomic number
(d) Atomic number
You might also like to view...
Neutrinos can feel
A) the electromagnetic force. B) the strong force. C) Both of the above. D) the weak force. E) None of the above.
Which statement regarding the force of a magnetic field on a current-carrying wire is true?
a. The magnetic force on the wire is independent of the direction of the current. b. The force on the wire is directed parallel to both the wire and the magnetic field. c. The force takes its largest value when the magnetic field is parallel to the wire. d. All of the above statements are false.
Two weights are connected by a massless wire and pulled upward with a constant speed of 1.50 m/s by a vertical pull P. The tension in the wire is T (see figure). P is closest to
A) 25 N. B) 125 N. C) 187.5 N. D) 245 N. E) 1225 N.
From the Sun, the distance to the Galactic Center is about:
A) 8 pc. B) 8,000 pc. C) 100,000 pc. D) 225 million pc. E) 100 billion pc.