Q. A wire is carrying current I. The field intensity H at a distance r from the wire

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Q. The materials which become polarized on the application of mechanical stress are called piezoelectric.

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Q. The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as

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Q. Above a certain temperature, the specific heat of a metal becomes constant. This temperature is called

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Q. A dielectric material must be

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Q. Spontaneous magnetisation is characteristic of ferromagnetic materials.

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Q. A leakage capacitor can be represented by a capacitance C and resistance R in parallel C.

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Q. Electric dipole moment is expressed in debye unit.

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Q. A vacant electronic state moves in the same direction as would a positive charge carrier.

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Q. Piezoelectricity means the slight change in dimensions of a specimen when an electric field is applied.

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Q. Many compounds also exhibit semiconducting properties.

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Q. A characteristic property of crystal is its periodicity of structure.

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Q. For making a capacitor it is better to have a dielectric having

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Q. In solid insulator materials having only one kind of atom, the types of polarization which exist are

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Q. Schrodinger wave equation is a

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Q. The dielectric losses do not depend on frequency.

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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.

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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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