1. The problem statement, all variables and given/known data Two circular coils of diameter 30.0 cm are parallel to each other and have their centers along the same line L but separated by 22.0 cm. When an experimenter views the coils along L, the coil closer to her carries a clockwise current of 2.50 A. Find the magnitude and sense (clockwise or counterclockwise) of the current needed in the other coil so that the net magnetic field on L midway between the two coils will have a magnitude of 4.10 µT and point away from the experimenter who is viewing the coils along L. (μ0 = 4π × 10-7 T ∙ m/A) 2. Relevant equations B1 = μo I r2 / [ 2 (r2 + x2 ) 3/2 ] i2 = i1*(B2/B1) 3. The attempt at a solution Trying to figure out the direction of the coils, field, and current. I believe the magnetic field is in direction of the current? the current is in direction of the length?