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JEE PHYSICS MCQ: CURRENT ELECTRICITY

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A conducting wire of cross-sectional area 1 cm21 \mathrm{~cm}^2 has 3×1023 m−33 \times 10^{23} \mathrm{~m}^{-3} charge carriers. If wire carries a current of 24 mA24 \mathrm{~mA}, the drift speed of the carrier is
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Correct option: B
5×10−3 m/s5 \times 10^{-3} \mathrm{~m} / \mathrm{s}
Option B (5×10−3 m/s5 \times 10^{-3} \mathrm{~m} / \mathrm{s}) is correct because the drift speed is calculated using the formula vd=i/(neA)v_d = i / (n e A).

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