Question

(CLASS WORK)
MAGNETIC FIELD DUE TO CURRENT
CARRYING STRAIGHT CONDUCTORS
1.
ectic
netic
A horizontal overhead power line is at a height
of 4m from the ground and carries a current
of 100 A from east to west.The magnetic field
directly below it on the ground is
(Mo = 47 x 10-?TMA-1) (2008-AIEEE)
1) 2.5 x 10-7 T southward
2) 5 x 10-6 T northward
rrent
d-e
d-f
3) 5 x 10-6 Tsouthward
4) 2.5 x 10-7 T northward​

Answer 1

Answer:

see below

Explanation:

The magnetic field is

B=  

4π

μ  

0

​  

 

​  

 

r

2I

​  

 

=10  

−7

×  

4

2×100

​  

=5×10  

−6

T

According to right hand palm rule, the magnetic field is directed towards south.