Q. ∈ᵣ is determined by the atomic structure of the dielectric.

View solution

Q. A rare gas has N atoms per m³. If electronic polarizability of single atom of this gas is αe, then

View solution

Q. The colour code on a carbon resistor is brown-black-red-gold. The value of resistance is

View solution

Q. M = (μᵣ - 1)H.

View solution

Q. Silicon and germanium are elements in the

View solution

Q. A sample of N type semiconductor has an electron density of 6.25 x 10¹⁸/cm³ at 300 K. If intrinsic concentration of carriers in this sample is 2.5 x 10¹³/cm³ at this temperature, the hole density is

View solution

Q. Assertion (A): In a conductor, current density remains constant in time as long as E is constant.

Reason (R): In a conductor, J = σE.

View solution

Q. Hysteresis curve is associated with motion of domain walls.

View solution

Q. The number of protons in germanium atom is

View solution

Q. Sulphur hexafluoride is used in

View solution

Q. The number of valence electrons in trivalent impurity is

View solution

Q. Soft iron is suitable for making temporary magnets.

View solution

Q. Antiferromagnetic materials do not have permanent dipoles.

View solution

Q. The Ohm's law for conduction in metals is

View solution

Q. The measurement of Hall coefficient of a semiconductor with one type of charge carriers gives the information about

View solution

Q. ∈₀ has no other physical meaning than that of a fundamental conversion factor.

View solution

Q. Which of the following is used in temperature alarm circuits?

View solution

Q. n type semiconductors

View solution

Q. The most important primary force of attraction in the formation of solids is

View solution

Q. When two conductors carry currents in the same direction the force is repulsive.

View solution