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

A wire of infinite length carrying current of 10 A is placed along z axis (direction of current is along positive z - axis), then the magnetic field at a point (3,4,0) is

A
(3^i+4^j)×107 T
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
(3.2^i+2.4^j)×107 T
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
(4^i+4^j)×107 T
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
(2.4^i+3.2^j)×107 T
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B (3.2^i+2.4^j)×107 T

B=μ0i2πr=2×107×(10)5=4×107 T
B=Bcos θ(^i)+Bsin θ^j
=B{4^i5+3^j5}=B5{4^i+3^j}=4×1075{4^i+3^j}
=(3.2^i+2.4^j)×107 T

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Magnetic Field Due to a Current Carrying Wire
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon