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NEET 2010 Physics question

PhysicsAlternating CurrentNEET 2010

A input is supplied to a transformer. The output circuit draws a current of at . If the efficiency of the transformer is the current drawn by the primary windings of the transformer is

Answer: (4)

Solution

Efficiency . \dfrac{440 × 2.0}{220 × I_p}I_p\dfrac{880}{0.80×220}\dfrac{880}{176}$ =

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Question ID VK-090493