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a)During a 82-ms interval, a change in the current in a primary coil occurs. This change...

a)During a 82-ms interval, a change in the current in a primary coil occurs. This change leads to the appearance of a 4.2-mA current in a nearby secondary coil. The secondary coil is part of a circuit in which the resistance is 12 Ω. The mutual inductance between the two coils is 3.2 mH. What is the change in the primary current?

b) The magnetic flux that passes through one turn of a 13-turn coil of wire changes to 3.78 from 8.76 Wb in a time of 0.0343 s. The average induced current in the coil is 263 A. What is the resistance of the wire?

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Answer #1

Soln PART - A The СМЕ induced in the secondary circuit Vs MdL dt Also in the secondary circuit Vsa R Is R = 122 Is 3 A = 4.2According Law of Electrome to Faradays Law nag netic the induction induced em emf & z -N АФ st (9 - t to where n N is the nu

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