Determine the inductance of the instrument

Posted on 2014-02-21 14:17:00 in Physics by SILVESTER

A 10 ampere range electrodynamics ammeter is controlled by a spring having a tension constant of 10^-7 N-m per degree. The full scale deflection is 110^o. Determine the inductance of the instrument when measuring a current of 10 amperes. The initial inductance is 2 µ H and the change of inductance is linear with deflection of the moving coil.

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