A toroidal solenoid with a rectangular cross-section is wound uniformly with 480 turns. The inner radius is a=5 cm, the outer radius is b=7.5 cm, and it has a thickness of t=1 cm. What is the self-inductance of this device? This image depicts a three-dimensional representation of a cylindrical shape, specifically a hollow cylinder or a tube. The diagram provides a visual explanation of the key dimensions of the cylinder, indicated as follows:- **a:** This represents the inner radius of the cylinder. It is the distance from the center of the cylinder to the inner surface.- **b:** This represents the outer radius of the cylinder. It is the distance from the center of the cylinder to the outer surface.- **t:** This is the thickness of the cylinder wall. It is determined by the difference between the outer radius (b) and the inner radius (a), expressed as \(t = b - a\).The cylindrical model is shadowed and shaded to emphasize the hollow nature and thickness of the cylinder wall. This type of diagram is typically used in engineering and physics to explain the properties and calculations related to hollow cylindrical objects.

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