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it is defined as the dielectric loss expressed as the tangent of the angle between the reactance and the impedance vectors of the capacitor it is
electrical properties of dielectric materiala loss of energy which eventually produces a rise in temperature of a dielectric placed in an alternating
electrical properties of dielectric materialsthe term dielectric strength of a dielectric material means the maximum electric field strength that it
electrons have very much smaller mass than that of ions so they respond more rapidly to a changing electric field. for electric field that oscillates
in the presence of electronic ionic and dipolar polarization mechanisms the average induced dipole moment per molecule will be the sum of all
interfacial polarization takes place whenever there is an storage of charge at an interface between two materials or between two regions in a
in the case of orientation polarization we have material with built in dipoles that are independent of each other i.e. they can rotate liberally in
the contribution of ionic polarization takes account of the fact that when in a molecule some of the atoms have an excess positive or negative charge
it is defined as an electric strain produced in an atom due to application of external electric field to the bulk material. it is the result of the
an atom is said to be polarized if it possesses and effective dipole moment that is if there is a separation between the centres of negative and
an electrical dipole is just a separation between a negative and positive charge of the same magnitude. consider that a dielectric material is
consider that two large parallel plates forming a capacitor are separated by a distance d with vacuumed as the dielectric medium between the plates.
a metal forms 2 oxides. the higher oxide has 80 metal. 0.72g of lower oxide gave 0.8g of higher oxide when oxidised. show that law of multiple
how to calculate speed of light? the speed of light in vacuum normally denoted by symbol c is a universal physical constant which is very
limnology it is the study of organisms present in rivers or fresh water lakes. limnology is also called as freshwater science. this is the study of
radiobiology this is the study of effects of radiations on living organisms. radiobiology is a branch of science which concerned with the action of
apiculture this is the study of bee-keeping for obtaining wax and honey. beekeeping is also known as apiculture it is taken from latin apis bee.
biostatics this is the application of mathematics in living organisms. biostatistics is a contraction of biology or statistics sometimes it is
astrobiology this is the branch of scientific enquiry dealing with the possibility of life in the outer space. astrobiology is a type of study of the
forestry it concerned with protection or development of forest and to explore the outcome or economic potential of forest. forestry is the art or
biogeography this is the distribution of organisms in various parts of the earth. over periods of ecological changes biogeography contains the study
economic biology this is the study of useful plants and animals or their products. economic biology is referred to as economics and human biology.
veterinary science this is the study of domestic animals. veterinary science or veterinary medicine is the branch of science which deals with the
sericulture this is related to silk worms. sericulture is also known as silk farming. sericulture is rearing of silkworms for the production of raw
pathology this concerned with the identification of different diseases causative organs their prevention and control methods. pathology is a kind of