Answer:
Properties of semiconductors are determined by the energy gap between valence and conduction bands. To understand, what is semiconductor, we have to define these terms. In solid-state physics, the energy gap or the band gap is an energy range between valence band and conduction band where electron states are forbidden.
Answer:
200 W
Explanation:
The power is given by the ratio between the amount of work done and the time taken to perform the work:

where in this problem we have
W = 2600 J is the work done
t = 13 s is the time taken to do the work
Substituting the numbers into the equation, we find
