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Current Electricity question

2015 · Shift 0 · Q55
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Current Electricity question

2015 · Shift 0 · Q55

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
When 5V5V5V potential difference is applied across a wire of length 0.1m,0.1m,0.1m, the drift speed of electrons is 2.5×10−4  ms−1.2.5 \times {10^{ - 4}}\,\,m{s^{ - 1}}.2.5×10−4ms−1. If the electron density in the wire is 8×1028  m−3,8 \times {10^{28}}\,\,{m^{ - 3}},8×1028m−3, the resistivity of the material is close to :
  1. A
    1.6×10−6Ωm1.6 \times {10^{ - 6}}\Omega m1.6×10−6Ωm
  2. B
    1.6×10−5Ωm1.6 \times {10^{ - 5}}\Omega m1.6×10−5Ωm
  3. C
    1.6×10−8Ωm1.6 \times {10^{ - 8}}\Omega m1.6×10−8Ωm
  4. D
    1.6×10−7Ωm1.6 \times {10^{ - 7}}\Omega m1.6×10−7Ωm
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