If the current through wire A is 1 A out of the page and the current flowing through wire B is 1 A into the page, what is the magnitude of the magnetic field at point P?
Group of answer choices 
0.318 x 10-7 T
2 x10-7 T
3.14 x 10-7 T
4 x 10-7 T
1 x 10-7 T
Homework Answers
Using right hand thumb rule The magnetic force due to A is upward (+y direction ).
The magnetic force due to B is upward (+y direction).
So resultant field at point P
Here 
, IA=IB=1.0 A , R=1.0 M
So
Answer
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to
A 10.0 x 10−7 T.
b 12.0 x 10−7 T.
c 15.0 x 10−7 T.
d 20.0 x 10−7 T.
e 60.0 x 10−7 T.
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