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1. Calculate the current required in a 500 turn coil to produce an electric field strength of 4000 At/m in an iron circuit of mean length 25 cm.

2. A 400 turn coil is wound onto an iron toroid of mean length 18 cm and uniform csa 4.5 cm². If a coil current of 2.25 A results in a flux of 0.5 mWb, determine

(a) the mmf,

(b) the flux density,

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Electrical & Electronics, Engineering

Category:- Electrical & Electronics
Reference No.:- M92101918

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