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An iron ring of mean diameter 10 cm is uniformly wound with 2000 turns of wire.
When a current of 0.25 A is passed by the coil a flux density of 0.4 T is set up in the iron. Find
(a) The magnetizing force and
(b) The relative permeability of the iron under these conditions.
A Newton is equal to which of the following? a) kilogram-meter per second b) meter per second squared c) Kilogram-meter per second squared d) Kilogram per
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