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.

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?