Question: A wooden toroidal core with a square cross section has an inner radius of l0 cm and an outer radius of 12cm. It is wound

A wooden toroidal core with a square cross section has an inner radius of l0 cm and an outer radius of 12cm. It is wound with one layer of wire (of diameter 1.0 mm and resistance per meter 0.020 Ω/m). What are?

(a) The inductance and

(b) The inductive time constant of the resulting toroid? Ignore the thickness of the insulation on the wire.

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