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Volume resistance: The resistance provided to the current which flows through the material is called volume resistance. For a cube of unit dimensions this is called volume resistivity. This resistivity is the flow of current resistance offered to the flow of current through the body of the material, and is expressed in the same way as the resistivity of a conducting material. In ohm-m. Thus the volume resistance of an insulating material may be expressed as
R=ρvd/a
Where ρV IS called the volume resistivity, and is expressed in terms of ohm-m. "d" is length of the current path through the material in meters, "a" is the cross section area on the current path in square-m.
Surface resistance: The resistance offered by to current I which flows over the surface of insulating material is called surface material. Surface resistivity depends upon the humidity.
The voltage drops across two components when connected in series across an a.c. supply are v1 =150sin 314.2t and v2 =90sin(314.2t -∏/5) volts respectively. Determine (a) the v
Mass of the system is same. since, p=mv momentum remains same
Regard as three resistors having three unique values of resistance. Presume the resistors are connected in series with each other. Additional suppose that the series combination of
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In Bohr's theory of the atom, what force was responsible for holding the electrons in their orbit? Ans: Coulomb force or the force of attraction among the proton (nucleus) a
There are several conditions for formation of cat ions ? Low Ionisational potential ? Lesser Charge ? More atomic size of atoms forms cations easily ? Ions having Inert
A body moves along x-axis with velocity v at position x. If the plot v-x is an ellipse with major axis 2A and minor axis 2u, what is the modulus of maximum acceleration?
Lyman series: The series which define the emission spectrum of hydrogen while electrons are jumping to the ground state. All lines are in the ultraviolet.
what is semi conductor
uses of diode
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