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PhysicsNEET 2020Ohm's law, resistivity, temperature dependence

Current Electricity

A charged particle having a drift velocity of 7.5×10−4 m s−17.5 \times 10^{-4}\ \mathrm{m\,s^{-1}} in an electric field of 3×10−10 V m−13 \times 10^{-10}\ \mathrm{V\,m^{-1}} has a mobility, in m2 V−1 s−1\mathrm{m^2\,V^{-1}\,s^{-1}}, of:

  1. A.2.25×10152.25 \times 10^{15}
  2. B.2.5×1062.5 \times 10^{6}✓
  3. C.2.5×10−62.5 \times 10^{-6}
  4. D.2.25×10−152.25 \times 10^{-15}

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