MHT CET 2024 Physics question

In LCR series circuit if the frequency is increased the impedance of the circuit

(A)increases
(B)decreases
(C)either increases or decreases
(D)first decreases then become minimum and then increasesCorrect

Answer: (D)

Solution

The impedance of a series LCR circuit is . At low frequency the capacitive reactance dominates, so as increases the net reactance falls and decreases. At resonance , $ω L =

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Question ID VK-093325