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Resist is a word that means “to oppose”. Resistance is the property of opposing the flow of electrons in a conductor or semiconductor. A resistor is an electronic component that has the property of resistance. “A passive electronic component with two terminals is used to limit or regulate the flow of electric current in electrical … Read more

When an electric current is passed through a conductor by placing it perpendicular to a magnetic field, then a voltage is generated on both sides of that conductor. The phenomenon of generation of voltage in the conductor is called Hall Effect. The Hall Effect was named after its discoverer, Edwin Hall. This is somewhat similar … Read more

Semiconductors are materials that have a conductivity between conductors (usually metals) and non-conductors or insulators (such as most ceramics). Semiconductors can be pure elements, such as silicon or germanium, or compounds such as gallium arsenide or cadmium selenide. In a process called doping, small amounts of impurities are added to pure semiconductors, causing large changes … Read more

The definition of an energy band is the number of atoms within a substance that can be as close to each other as possible and at the same time that many electrons will interact with each other. The energy level of electrons within their shell can be caused by changes in their energy levels. The … Read more

The matter is made up of molecules that consist of atoms. According to Bohr’s theory, “the atom consists of a positively charged nucleus and a number of negatively charged electrons which revolve round the nucleus in various orbits”. When an electron is raised from a lower state to a higher state, it is said to … Read more

Electric Charge Electric charge is the physical property of matter due to which it experiences a force when placed in an electromagnetic field. Positive and negative electric charges are two types of charge that are usually carried by the charge carriers, protons, and electrons. Energy is created by the movement of charges. Depending on the … Read more