Question

Young domestic chickens have the ability to orient themselves in the earth's magnetic field. Researchers used a set of two coils to adjust the magnetic field in the chicks' pen. (Figure 1) shows the two coils, whose centers coincide, seen edge-on. The axis of coil 1 is parallel to the ground and points to the north; the axis of coil 2 is oriented vertically. Each coil has 43 turns and a radius of 1.2 m. At the location of the experiment, the earth's field had a magnitude of 5.6×10−5T and pointed to the north, tilted up from the horizontal by 61∘.

Part A

If the researchers wished to exactly cancel the earth's field, what currents would they need to apply in coil 1 and in coil 2?

Express your answers in amperes separated by a comma.

Coil 2 61° North The centers of the coils coincide. Up

Answer 1