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.
