What will be the deflection (in rad) of a moving iron instrument, when – McqOptions

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1.	What will be the deflection (in rad) of a moving iron instrument, when the inductance of the moving iron instrument is (20 + 4θ) μH, where θ is the deflection in radian from zero position and the deflection current is 5 A? Assuming spring constant k = 10 × 10-6 Nm/rad.
A.	5
B.	10
C.	15
D.	20
Answer» B. 10

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