Q. Assertion (A): Holes are majority carriers in p type semiconductor.

Reason (R): In p type semiconductor, the electrons produced by thermal agitation recombine with holes.

View solution

Q. If τ is relaxation time and τc is average time between collisions, then in an isotropic metal

View solution

Q. Assertion (A): Resistivity of a perfect single crystal of a metal goes to zero as T approaches zero.

Reason (R): Scattering of electrons is due to deviations from perfect periodicity of lattice.

View solution

Q. Fleming's left hand rule is used to find

View solution

Q. Which inductor is linear?

View solution

Q. The two conductors of a transmission line carry equal current I in opposite direction. The force on each conductor is

View solution

Q. Which inductor is used at high frequencies?

View solution

Q. Magnetisation of a material is the magnetic dipole moment per m³.

View solution

Q. With increase in temperature, the electrical conductivity would

View solution

Q. An electron for which l = 0 has zero orbital magnetic dipole moment.

View solution

Q. The resistance of a metallic wire would

View solution

Q. If a small amount of Cu is added to Ni conductor, then

View solution

Q. When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability.

View solution

Q. If the number of atoms per unit volume of a monoatomic gas changes, the dielectric constant still remains constant.

View solution

Q. The number of protons in a copper atom are

View solution

Q. When a material is in superconducting state and a magnetic field is applied

View solution

Q. For a diamagnetic material, μᵣ = 1.

View solution

Q. We can know the arrangement of atom in a material by studying electron diffraction pattern.

View solution

Q. The magnetic quantum number determines the component of angular momentum along a prescribed direction.

View solution

Q. Wood is a diamagnetic material.

View solution