Electro Magnetic Induction And Alternating Currents Question 28

Question: A 10 ohm resistance, 5 mH coil and 10 mF capacitor are joined in series. When a suitable frequency alternating current source is joined to this combination, the circuit resonates. If the resistance is halved, the resonance frequency [MP PET 1995]

Options:

A) Is halved

B) Is doubled

C) Remains unchanged

D) In quadrupled

Show Answer

Answer:

Correct Answer: C

Solution:

Resonant frequency

$ =\frac{1}{2\pi \sqrt{LC}} $ does not depend on resistance.



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