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

A long horizontal wire P carries a current 50 A. It is rigidly fixed. Another line wire Q is placed directly above and parallel to P. The weight of wire Q is 0.075 Nm1 and caries a current of 25 A. Find the position of wire Q from P so that wire to remains suspended due to the magnetic repulsion-

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

The correct option is A 3.33 mm
Formula,

Fl=μ04π2I1I2r

0.075=107×2×50×25r

r=3.33×103

r=3.33mm

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Parallel Currents
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon