Electro Magnetic Induction And Alternating Currents Question 22

Question: In LCR circuit, the capacitance is changed from C to 4C. For the same resonant frequency, the inductance should be changed from L to [MP PMT 1986; BHU 1998]

Options:

A) 2L

B) L / 2

C) L / 4

D) 4 L

Show Answer

Answer:

Correct Answer: C

Solution:

$ \omega =\frac{1}{\sqrt{L_{1}C_{1}}}=\frac{1}{\sqrt{L_{2}C_{2}}}\Rightarrow ,L_{2}=\frac{L_{1}}{4} $



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