Consider a conduction (free) electron in high-purity si crystal with mobility μn = 1350 cm2/v-s that moves in the si bar of length 1 mm. a voltage of 10 v is applied to the opposite ends of the bar. compare the drift velocity of this electron with its mean thermal velocity v0 related to thermal energy kt through the relationship eth = (m v02)/2. repeat your calculation for a voltage of 5x103 v, using the same value of effective mass. comment on the actual effect of such high electric field on the electron mobility.

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r