A) 30 Hz
B) 25 Hz
C) 50 Hz
D) 20 Hz
Correct Answer: C
Solution :
The frequency \[(f)\] at resonance is given by \[f=\frac{1}{2\pi \,\sqrt{LC}}\] Given, L = 0.405 H, \[C=25\mu F=25\times {{10}^{-6}}F\] \[\therefore \] \[f=\frac{1}{2\pi \,\sqrt{0.405\times (25\times {{10}^{-6}})}}\] \[\Rightarrow \] \[f=50\,Hz\]You need to login to perform this action.
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