Q5) When applying a voltage of (100 mv) across a wire of length (20m), the current density passing through the wire was (312500 A/m²). Calculate the resistivity of the wire and the electron mobility if the concentration of the free electrons equals (5.86×10²8 / m³ ). m2 Ans.) 1.6x10 Qm,6.67×10¯ v.sec.

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Chapter20: Electric Current, Resistance, And Ohm's Law
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Q5) When applying a voltage of (100 mv) across a wire of length (20m),
the current density passing through the wire was (312500 A/m³).
Calculate the resistivity of the wire and the electron mobility if the
concentration of the free electrons equals (5.86 ×10²8 / m³ ).
m2
Ans.) 1.6×10 Qm,6.67×10¯³.
V.sec.
Transcribed Image Text:Q5) When applying a voltage of (100 mv) across a wire of length (20m), the current density passing through the wire was (312500 A/m³). Calculate the resistivity of the wire and the electron mobility if the concentration of the free electrons equals (5.86 ×10²8 / m³ ). m2 Ans.) 1.6×10 Qm,6.67×10¯³. V.sec.
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