PhysicsHardHigh School (11–12)Electricity & Magnetism › Magnetic Effects of CurrentJEE MainAPA-LevelIB
Created by StemPy LabA toroid has turns and carries A. Its inner radius is cm and its outer radius is cm. By how much is the field at the inner edge larger than the field at the outer edge?
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← A single layer of insulated wire, 0.4 mm across, is wound closely on a long tube. It carries 2.2 A. What is the field well inside the winding?Two identical flat coaxial coils, each of 28 turns and radius 10 cm, carry 2 A in the same sense. Their centres are 10 cm apart, on a common axis. What is the field on the axis, halfway between the centres? →
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