An iron ring has a tightly wound coil with 1500 turns. The inner and outer radii of the iron core are 10 cm and 12 cm respectively. A radial airgap of length 1 cm is cut in the iron ring. If the current in the coil is 4 A and the relative permeability of the iron is 1200, determine the following: i. The cross-sectional area of the iron core ii. The flux density in the magnetic circuit.

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Author:Robert L. Boylestad
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An iron ring has a tightly wound coil with 1500 turns. The inner and outer radii of
the iron core are 10 cm and 12 cm respectively. A radial airgap of length 1 cm is cut
in the iron ring. If the current in the coil is 4 A and the relative permeability of the
iron is 1200, determine the following:
i. The cross-sectional area of the iron core
ii. The flux density in the magnetic circuit.
Transcribed Image Text:An iron ring has a tightly wound coil with 1500 turns. The inner and outer radii of the iron core are 10 cm and 12 cm respectively. A radial airgap of length 1 cm is cut in the iron ring. If the current in the coil is 4 A and the relative permeability of the iron is 1200, determine the following: i. The cross-sectional area of the iron core ii. The flux density in the magnetic circuit.
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