ECE :: Materials and Components
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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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If t is relaxation time and tc is average time between collisions, then in an isotropic metal
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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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Fleming's left hand rule is used to find
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If m is the mass of electron cloud, the equation of motion of electron cloud in the presence of an alternating electric field is of the form
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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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Above a certain temperature, the specific heat of a metal becomes constant. This temperature is called
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