The driving force for diffusion currents in a semiconductor is: Group of answer choices An external voltage connected to a semiconductor. Inhomogeneous charge carrier densities. None of the other answers are correct. Homogeneous charge carrier densities.

Can a molecule have bond dipoles but not have a molecular dipole?

Estimate the kinetic energy of the neptune with respect to the sun as the sum of the terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. [assume the neptune is a uniform sphere with mass = 1.0×1026 kg , radius = 2.5×1010 m , rotation period 16.1 h , orbital period 6.01×104 d and is 4.6×109 km from the sun.]

Are good conductors of heat also good conductors of electricity? explain your answer.