Question
Reason (R): In elemental dielectrics there are no permanent dipoles or ions.
a.
Both A and R are true and R is correct explanation of A
b.
Both A and R are true but R is not correct explanation of A
c.
A is true but R is false
d.
A is false but R is true
Posted under Electronics and Communication Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. Assertion (A): For elemental dielectrics, P = NaeEi where N is number of atoms/m³, P is polarization, ae is electronic polarization and Ei is internal electric field. Reason...
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. The circumference of an electron orbit is equal to integer times the wavelength of electron.
View solution
Q. In a specimen of silicon steel, a field strength of 200 A/m causes a flux density of 0.5 T. In a specimen of cast iron, the same H would cause B to be
View solution
Q. In a rare gas, the molecules of some atoms have an excess positive or negative charge. The electric field tends to shift positive ions relative to negative ions. This is known as ionic polarization.
View solution
Q. Thermistor is used in
View solution
Q. Nichrome is used for
View solution
Q. The electric dipole moment of a neutral system of point charges Q1, Q2.... is ∑Qiri . The charges Qi
View solution
Q. The class of insulation of impregnated paper is
View solution
Q. Assertion (A): The resistance of a copper specimen changes by about 22% when temperature is increased from room temperature to 700°C.
Reason (R): The physical properties of a material are determined mostly by the extent of impurities.
View solution
Q. Resistivity of rubber is about
View solution
Q. An iron specimen has µᵣ = 1000 when B = 0.3 T. If B = 0.35 T, µᵣ
View solution
Q. Which solid dielectric has highest temperature limit?
View solution
Q. Permeability is analogous to
View solution
Q. The colour code on a carbon resistor is green-blue-yellow. The tolerance is
View solution
Q. At a very low temperature, a semiconductor
View solution
Q. The colour code on a carbon resistor is red-red-black-silver. The value of resistor is
View solution
Q. Some typical examples of macroscopic quantities are
View solution
Q. The temperature coefficient of a thermistor
View solution
Q. Assertion (A): Helium, Argon and Neon are gaseous at room temperature.
Reason (R): The atoms in Helium, Argon and Neon are chemically extremely inactive.
View solution
Q. Assertion (A): For most metals, Fermi energy EF is less than 10 eV.
Reason (R): Fermi level of a metal is given by EF = 3.64 x 10^-19 (n)^2/3 where n is number of free electrons/m³ of metal.
View solution
Q. The capacitance of an insulated conducting sphere of radius R in vacuum is
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Electronics and Communication Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!
