wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

In copper, each atom releases one electron. If a current of 1.1A is flowing in the copper wire of diameter 1mm then the drift velocity of electrons, will approximately be (density of copper =9×103Kgm3 and its atomic weight =63).

A
10.3 mm/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
0.1 mm/s
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
0.2 mm/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
0.2 cm/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 0.1 mm/s
Electron density n=NAρM=(6.023×1023)×(9×103)63×103=0.86×1029m3

Drift velocity vd=IneA=1.1(0.86×1029)×(1.6×1019)×π(0.5×103)2=0.1×103m/s=0.1 mm/s

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Electric Potential Due to Uniformly Charged Spherical Shell or Solid Sphere
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon