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1. Homework Statement
12.5A, 3.1x10^-5
2. Homework Equations
How far from a long conductor passing a current of 12.5A is the magentic field of strength 3.1x10^-5T?
3. The Attempt at a Solution
B= uI/2(pi)r
r=uI/2(pi)B
=(4pi)(12.5A)/ 2(pi)(3.1x10^-5T)
= 8.1x10^5m
12.5A, 3.1x10^-5
2. Homework Equations
How far from a long conductor passing a current of 12.5A is the magentic field of strength 3.1x10^-5T?
3. The Attempt at a Solution
B= uI/2(pi)r
r=uI/2(pi)B
=(4pi)(12.5A)/ 2(pi)(3.1x10^-5T)
= 8.1x10^5m