[SOLVED] Direction of the Magnetic Field due to a Wire

[cse63146]

1. The problem statement, all variables and given/known data

http://session.masteringphysics.com/problemAsset/1013366/11/1013366B.jpg

Find the magnetic field at point C, D, E.

The choices are for all 3 are

i) Out of the page
ii) Into the page
iii) Not into the page or not out of the page, and not = 0
iv) 0

2. Relevant equations

The Right Hand Rule for a Straight Wire

3. The attempt at a solution

I believe the answer for:

C - Out of the page
D - Not into the page or not out of the page, and not = 0
E - Into the page

Any help would be appreciated.

[Shooting Star]

Think about the individual contributions of I and 2I for point D, and then add up. C and E are correct, even though you didn't give any reason.

[cse63146]

Think about the individual contributions of I and 2I for point D, and then add up. C and E are correct, even though you didn't give any reason.

I used the Right Hand Rule for a Straight Wire, I just didnt know how to describe what I did.

Thank you for the suggestion for D.

So since I_1 doesnt equal I_2, D can't be 0.

Since I_2 > I_1, it would have more effect on it, using the right hand rule for a straight wire, D would be coming out of the page

[Shooting Star]

Right.

[cse63146]

Thank You for your help.