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Homework Statement
Two wires shown in figure p19.48 carry currents of 5.00A in opposite directions and are separated by 10cm. Find direction and magnitude of the net mag field.
(a) at a point midway between the wires. (b) at point P1 (c) at point P2
Homework Equations
B=B1+B2??
B= u0I / 2pir
The Attempt at a Solution
How would i approach a question like this? How does opposite charges affect the sign in the equation B1+B2?
Thanks!