Which one is conductor in the following materials?
A. silicon
B. quartz
C. glass
D. copper
查看答案
At room temperature, the barrier potential of silicon is ________.
A. 0.7V
B. 0.3V
C. 0.5V
D. 1V
Oxygen is first in abundance of the Earth’s crust.
The rapid multiplication of conduction-band electrons, known as a zener effect, results in a rapid buildup of reverse current.
Pierre de Fermat enunciated the celebrated Principle of Least Time.