| An LCR circuit as shown in the figure is connected to voltage source \[{{\operatorname{V}}_{\operatorname{ac}}}\] whose frequency can be varied. |
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| The frequency, at which the voltage across the resistor is maximum, is: [JEE ONLINE 22-04-2013] |
A) 902 Hz
B) 143 Hz
C) 23 Hz
D) 345 Hz
Correct Answer: C
Solution :
| [c] Frequency \[f=\frac{1}{2\pi \sqrt{LC}}\] |
| \[=\frac{1}{2\times 3.4\sqrt{24\times 2\times {{10}^{-4}}}}\] |
| \[=23Hz\] |
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