Question
Reason (R): When subjected to ac fields, the dielectric constant can be expressed as ∈'r - j∈"r.
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): In imperfect capacitors, the current does not lead the applied ac voltage by 90°. Reason (R): When subjected to ac fields, the dielectric constant can be...
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. In atomic physics, a state with l = 0 is called p state.
View solution
Q. If a sample of germanium and a sample of silicon have the same impurity density and are kept at room temperature
View solution
Q. When an electric field E is applied to solid and liquid insulating materials, the internal field Ei acting at the location of atom is such that
View solution
Q. Which element exhibits the property of inertia?
View solution
Q. For a permanent magnetic material
View solution
Q. In a coaxial cable, braided copper is used for
View solution
Q. The hysteresis phenomenon in ferromagnetic materials exists at all temperatures.
View solution
Q. Assertion (A): Magnetic susceptibility of diamagnetic materials is much less than that of paramagnetic materials.
Reason (R): For diamagnetic as well as paramagnetic materials, μᵣ is nearly equal to 1.
View solution
Q. The conductivity of intrinsic semiconductor is given by
View solution
Q. The core of a coil has a length of 10 cm. The self inductance is 8 mH. If the core length is doubled, all other quantities remaining the same, the self inductance will be
View solution
Q. The minority carrier life time and diffusion constant in a semiconducting material are 100 μs and 100 cm²/s respectively. The diffusion length of carriers is
View solution
Q. Assertion (A): Electronic and Ionic polarization in a polyatomic gas are independent of temperature.
Reason (R): The orientation polarization is independent of temperature.
View solution
Q. Two materials having temperature coefficients of 0.004 and 0.0004 respectively are joined in series. The overall temperature coefficient is likely to be
View solution
Q. Diamond is a paramagnetic material.
View solution
Q. Which capacitor-store higher amount of energy?
View solution
Q. Above ferroelectric curie temperature, spontaneous polarization in ferroelectric materials becomes stronger.
View solution
Q. In paramagnetic materials
View solution
Q. Assertion (A): Atomic number of sodium is 11.
Reason (R): Sodium has a body centred cubic lattice.
View solution
Q. The number of valence electrons in pentavalent impurity is
View solution
Q. If the diameter of a wire is doubled, its current carrying capacity becomes
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!