Electro Magnetic Induction And Alternating Currents Question 70

Question: In a LCR circuit capacitance is changed from C to 2C. For the resonant frequency to remain unchanged, the inductance should be change from L to [AIEEE 2004]

Options:

A) 4L

B) 2L

C) L/2

D) L/4

Show Answer

Answer:

Correct Answer: C

Solution:

$ {\nu_{0}}=\frac{1}{2\pi \sqrt{LC}} $ If C changes to 2C then for keeping n0 constant L must change to L/2.



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