NPN Junctions and Semiconductors Quiz

A type of semiconductor junction consisting of two n-type semiconductors surrounding a p-type semiconductor.

A material with electrical conductivity between that of a conductor and an insulator.

A formula that relates the energy (E) of a photon to its frequency (f) and Planck's constant (h): E=hf.

<p>The Einstein equation relates the diffusion coefficient of carriers to temperature, which is important for understanding the diffusion of carriers in NPN junctions.</p> Signup and view all the answers

<p>Impurities can create doping regions within the semiconductor material, which can alter the electrical characteristics of the NPN junction.</p> Signup and view all the answers

<p>The width of the depletion region decreases as the voltage across the NPN junction increases, due to the increased number of charge carriers injected into the junction.</p> Signup and view all the answers

<p>Electrical engineering emerged as an identifiable occupation in the latter half of the 19th century after commercialization of the electric telegraph, the telephone, and electrical power generation, distribution, and use.</p> Signup and view all the answers

<p>Electrical engineering is now divided into a wide range of different fields, including computer engineering, systems engineering, power engineering, telecommunications, radio-frequency engineering, signal processing, instrumentation, photovoltaic cells, electronics, and optics and photonics. Many of these disciplines overlap with other engineering branches, spanning a huge number of specializations including hardware engineering, power electronics, electromagnetics and waves, microwave engineering, nanotechnology, electrochemistry, renewable energies, mechatronics/control, and electrical material.</p> Signup and view all the answers

<p>Specialized fields within electrical engineering include hardware engineering, power electronics, electromagnetics and waves, microwave engineering, nanotechnology, electrochemistry, renewable energies, mechatronics/control, and electrical material. These fields entail a variety of specializations related to the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism.</p> Signup and view all the answers