Created by StemPy LabTwo circular loops lie in the same plane with the same centre. The inner one has a radius of cm and carries A. The outer one has a radius of cm and carries A in the opposite sense. What is the size of the field at the centre?
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← Two long parallel wires are 20 cm apart. They carry 12 A and 36 A in the same direction. At what distance from the 12 A wire, on the line between them, is the field zero?The field at the centre of a circular coil of radius 12 cm is B₀. What is the field on the axis of the coil, 5 cm from its centre? →
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