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MHT CET Physics question

PhysicsAlternating CurrentMHT CET

A variable capacitor and an inductive coil with negligible resistance are connected in series to an a.c. voltage of value 100 V. The current in the circuit is 5 A when the capacitor decreased to half its value, the current becomes 10 A. The voltage across the capacitor in the first case is,

Answer: (B),(D)

Solution

and ; this gives either so V,

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Question ID VK-081730