For a moving iron ammeter, the change of inductance is 3 H/degree and – McqOptions

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1.	For a moving iron ammeter, the change of inductance is 3 H/degree and its spring constant is 4 X 10 N-m/degree. If the maximum deflection of the pointer is 90 degree, then the corresponding current in the coil be
A.	3.89 A
B.	4.05 A
C.	4.89 A
D.	5 A
Answer» D. 5 A

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