# Self inductance of a coil

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A coil of 500 turns is wound on a wooden ring having a mean diameter of 8 cm and a cross sectional area of 1.5 cm^2. Assuming relative permeability of wood is 1, calculate the self-inductance of the coil and the emf induced in it when the direction of a DC current of 5A flowing in it is reversed in 0.2 sec?

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#### Solution Summary

It does not compute the answer, but gives relevant formulas and equations explaining how these can be used to compute the answer.

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