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

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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.

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

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Q. Which inductor is linear?

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

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Q. Which inductor is used at high frequencies?

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

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Q. With increase in temperature, the electrical conductivity would

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

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Q. The resistance of a metallic wire would

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

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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.

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

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Q. The number of protons in a copper atom are

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

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Q. For a diamagnetic material, μᵣ = 1.

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

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

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Q. Wood is a diamagnetic material.

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Q. Curie Weiss law is Ɛ = C/(T-ϴ) .

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