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[" Calculate the inductance of a toroid ...

[" Calculate the inductance of a toroid whose "],[" inside radius is equal to "b" and cross-section "],[" has the form of a small square of side a."],[" The solenoid winding consists of N turns."],[" The space inside the solenoid is filled with "],[" uniform paramagnetic material having "],[" relative permeability "mu_(r)" ."]

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