A semiconductor can conduct electricity
A)
only below room temperature.
B)
never.
C)
only very much above room temperature.
D)
at room temperature but conductivity increases with increasing temperature.
E)
at room temperature but conductivity decreases with increasing temperature.
D
You might also like to view...
If you increase the tension of a string the velocity of the wave in the string
A. increases B. decreases C. does not change
A rectangular loop (area = 0.250 m2) turns in a uniform magnetic field with B = 0.210 T. At an instant when the angle between the magnetic field and the normal to the plane of the loop is ?/2 rads and increasing at the rate of 0.530 rad/s, what is the magnitude of the emf induced in the loop?
a. 5.25E–2 V b. zero c. 2.78E–2 V d. 9.91E–2 V e. 1.47E–2 V
A window glass that is 0.5 cm thick has dimensions of 3 m by 1.5 m. The thermal conductivity of this glass is 0.8 W/m ? K
If the outside surface of the glass is at -10°C and the inside surface is at 20°C, how much heat flows through the window in every hour? A) 50 MJ B) 60 MJ C) 70 MJ D) 80 MJ
An FM radio station broadcasts at 98.6 MHz. What is the wavelength of the radiowaves?
a. 60.8 m b. 6.08 m c. 3.04 m d. 0.314 m e. 0.33 cm