AP EAMCET · PHYSICS · Alternating Current
In an \(L-C-R\) circuit, the capacitance is changed from \(C\) to \(4 C\). For the same resonant frequency, the inductance should be changed from \(L\) to
- A \(2 L\)
- B \(\frac{L}{2}\)
- C \(\frac{L}{4}\)
- D \(4 L\)
Answer & Solution
Correct Answer
(C) \(\frac{L}{4}\)
Step-by-step Solution
Detailed explanation
In \(L-C-R\) circuit, Resonant frequency, \(f_0=\frac{1}{2 \pi \sqrt{L C}}\) When, \(C^{\prime}=4 C\), then resonant frequency is given as…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- The displacement of a damped harmonic oscillator is given by \(x(\mathrm{t})=\mathrm{e}^{-0.1 \mathrm{t}} \cos (10 \pi \mathrm{t}+\varphi)\). Here \(\mathrm{t}\) is in seconds. The time taken for its amplitude of vibration to drop to half of its initial value is close to:AP EAMCET 2023 Medium
- The emf of a cell of internal resistance \(2 \Omega\) is measured using a voltmeter of resistance \(998 \Omega\). The error in the emf measured isAP EAMCET 2024 Easy
- A resistance \(R\) is connected to ' \(n\) ' identical cells. If the current in the resistance is same whether the cells are connected either in series or in parallel, then the internal resistance (r) of each cell isAP EAMCET 2017 Easy
- Depth of a river is 100 m . Magnitude of compressibility of the water is \(0.5 \times 10^{-9} \mathrm{~N}^{-1} \mathrm{~m}^2\). The fractional compression in water at the bottom of the river is (Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )AP EAMCET 2024 Medium
- A metal wire of \(1 \mathrm{~cm}\) length and \(1 \mathrm{~mm}\) radius has a resistance of \(3 \times 10^{-3} \Omega\). If a wire of the same metal of length \(3 \mathrm{~cm}\) and radius \(0.5 \mathrm{~mm}\) is drawn, the resistance of the wire.AP EAMCET 2022 Medium
- A steel ball of radius \(2 \mathrm{~cm}\) is at rest on a frictionless surface. Another steel ball of radius \(4 \mathrm{~cm}\) moving with velocity of \(81 \mathrm{cms}^{-1}\) collides elastically with the ball which is at rest. After collision the ball with radius of \(2 \mathrm{~cm}\) moves with speed ofAP EAMCET 2020 Hard
More PYQs from AP EAMCET
- Let \(\bar{a}=4 \bar{i}+5 \bar{j}-\bar{k}, \bar{b}=\bar{i}-4 \bar{j}+5 \bar{k}, \bar{c}=3 \bar{i}+\bar{j}-\bar{k}\) and let \(\bar{\alpha}\) be a vector perpendicular to both \(\bar{a}\) and \(\bar{b}\) such that \(\bar{\alpha} \cdot \bar{c}=63\). Then \(\bar{\alpha}=\)AP EAMCET 2017 Easy
- If \(k\) is a positive integer and \(10^k\) is a divisor of the number \(9^{11}+11^9\), then the greatest value of \(k\) isAP EAMCET 2025 Hard
- If \(z=x+i y, x, y \in R\) and the imaginary part of \(\frac{\bar{z}-1}{\bar{z}-i}\) is 1 , then the locus of \(z\) isAP EAMCET 2019 Easy
- Find the number of ways of arrangement 6 red balls and 6 black balls in a row such that no two black ball are together.AP EAMCET 2020 Easy
- Two plates of same area are placed in contact. Their thickness as well as their thermal conductivities are in the ratio \(2: 3\). The outer surface of one plate is maintained at \(10^{\circ} \mathrm{C}\) and that of the other at \(0^{\circ} \mathrm{C}\). Temperature at the common surface isAP EAMCET 2021 Medium
- The electrostatic potential energy of the electron in an orbit of hydrogen is -6.8 eV . The speed of the electron in this orbit is ( C is speed of light in vacuum)AP EAMCET 2024 Medium