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The drift velocity of the electrons in a copper wire of length 2 m under the application of a potential difference of 200 V is 0.5 ms⁻¹. Their mobility is (in m² V⁻¹ s⁻¹)
Options
(a) 2.5×10⁻³
(b) 2.5×10⁻²
(c) 5×10²
(d) 5×10⁻³
Correct Answer:
5×10⁻³
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A coil of resistance 20 ohm and inductance 5H is connected with a 100V battery
- The displacement of a particle varies according to the relation x=4 (cos π t + sin π t)
- A body of mass 120 kg and density 600 kg/m³ floats in water.
- A bullet emerges from a barrel of length 1.2 m with a speed of 640 ms⁻¹.
- Three objects A,B and C are kept in a straight line on a frictionless horizontal surface
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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Good
i want expLanation
d = 2cm
v=200v
vd= 0.5m/s
mobility= vd/E
E=(vd)(d)/V
= 0.5/200(2) = 0.5/100 = (5)(10)-3 m2v-1s-1