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Q.

The power factor, cos ϕ, for the above circuit and the peak current, neglecting the mutual inductance of the coils, is :-

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a

π4,102 Ampere

b

−π4,102 Ampere.

c

0,20 Ampere

d

π4,10 Ampere

answer is C.

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Detailed Solution

The circuit can be simplified as: ϕ=00 ,peak current =20 Ampere.
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The power factor, cos ϕ, for the above circuit and the peak current, neglecting the mutual inductance of the coils, is :-