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MHT CET 2025 Physics question

PhysicsAlternating CurrentMHT CET 2025

If the power factor changes from 0.5 to 0.25 because impedance changes from to then . The value of x is (Resistance remains constant)

Answer: (B)

Solution

Power factor with R constant. Initially . Finally . Then $ = ⇒ 2R = x(4R)

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Question ID VK-102305