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9giddjl
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Homework Statement
Consider Figure 25.14 (attached photo). In the figure, two separate wires are in close proximity. If wire A carries a current of 1.5 A and wire B carries a current of 2.5 A, calculate the value of the magnetic field strength at a point x between the two wires.
Homework Equations
I know that I have to find B for wire A and B for wire B and then vectorially add them. The only problem I am really having is i don't know which wire has its magnetic field going into the page and which wire has its magnetic field coming out of the page. The book says wire a's magnetic field is going into the page whilst its coming out of the page for wire B. How do I know? I have used the right hand grip rule and I understand this.. I am just really uncertain and abit lost...
The Attempt at a Solution
Any help will be appreciated.. thankyou kindly:)