TS EAMCET · Physics · Electrostatics
There are two thin wire rings, each of radius \(R\), whose axes coincide. The charges of the rings are \(q\) and \(-\mathrm{q}\). The magnitude of potential difference between the centres of the rings separated by a distance \(\sqrt{3} \mathrm{R}\) is
- A 0
- B \(\frac{\mathrm{q}}{4 \pi \varepsilon_0 \mathrm{R}}\)
- C \(\frac{\mathrm{q}}{4 \pi \varepsilon_0 \mathrm{R}} \frac{1}{\sqrt{3} \mathrm{R}}\)
- D \(\frac{\mathrm{q}}{2 \pi \varepsilon_0 \mathrm{R}}\)
Answer & Solution
Correct Answer
(B) \(\frac{\mathrm{q}}{4 \pi \varepsilon_0 \mathrm{R}}\)
Step-by-step Solution
Detailed explanation
\begin{aligned} & \mathrm{V}_{\mathrm{A}}=\frac{1}{4 \pi \varepsilon_0} \frac{\mathrm{q}}{\mathrm{R}}-\frac{1}{4 \pi \varepsilon_0} \frac{\mathrm{q}}{\sqrt{\mathrm{R}^2+3 \mathrm{R}^2}} \\ & \mathrm{~V}_{\mathrm{B}}=\frac{-1}{4 \pi \varepsilon_0}…
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
- Which of the following has the largest de Broglie wavelength?TS EAMCET 2022 Easy
- A p-n junction is fabricated from a semiconductor with band gap of \(2.8 \mathrm{eV}\). What approximate wavelength it cannot detect? [use \(\mathrm{h}=6 \times 10^{-34} \mathrm{~m}^2 \mathrm{~kg} / \mathrm{s}\) ]TS EAMCET 2022 Easy
- A toroid core has inner radius of \(0.24 \mathrm{~m}\) and outer radius of \(0.26 \mathrm{~m}\). A current of 10 A flows through the wire having 2500 turns around it. Find the magnetic field inside the core of the toroid.TS EAMCET 2022 Medium
- A particle of mass ' \(\mathrm{m}\) ' is moving along a line \(\mathrm{y}=\mathrm{x}+\mathrm{a}\) with a constant velocity ' \(v\) '. The angular momentum of the particle about the origin isTS EAMCET 2023 Easy
- A hydrogen sample is prepared in a particular excited state \(A\) of quantum number, \(n_A=3\). The ground state energy of hydrogen atom is \(-|E|\). The photons of energy \(\frac{|E|}{12}\) are absorbed in the sample which results in the excitation of some electrons to excited state \(B\) of quantum number \(n_B\), whose value isTS EAMCET 2019 Medium
-
A spherical glass is attached to a rigid wall as shown in the figure. An observer located at point \(\mathrm{O}\) is looking at a point \(\mathrm{A}\) on the wall. The refractive index of the glass is 1.5 and that of air is 1.0. The distances are \(\mathrm{OA}=8 \mathrm{~cm}, \mathrm{XA}=3\) \(\mathrm{cm}\). If the radius of curvature of spherical glass surface is \(R\) \(=5 \mathrm{~cm}\), then the apparent distance of \(\mathrm{A}\) from observer \(\mathrm{O}\) isTS EAMCET 2022 Hard
More PYQs from TS EAMCET
- A carrier wave of peak voltage is used to transmit a message signal. For getting a modulation index of , the peak voltage of the modulating signal isTS EAMCET 2018 Easy
- When \(Q_1\) amount of heat is supplied to a monatomic gas, the work done by the gas is \(W\). When \(Q_2\) amount of heat is supplied to a diatomic gas, the work done by the gas is \(2 W\). Then \(Q_1: Q_2=\)TS EAMCET 2024 Hard
- When the energy of incident radiation is increased by \(20 \%\), the kinetic energy of the photoelectrons emitted from a metal surface increased from \(0.5 \mathrm{eV}\) to \(0.8 \mathrm{eV}\). The work function of the metal isTS EAMCET 2020 Easy
- An current is given by the expression, in amperes. The frequency and RMS value of the current respectively areTS EAMCET 2022 Easy
- A force separately produces accelerations of \(18 \mathrm{~ms}^{-2}, 9 \mathrm{~ms}^{-2}\) and \(6 \mathrm{~ms}^{-2}\) in three bodies of masses \(\mathrm{P}, \mathrm{Q}\) and R respectively. If the same force is applied on a body of mass \(\mathrm{P}+\mathrm{Q}+\mathrm{R}\), then the acceleration of that body isTS EAMCET 2025 Medium
- The time period of a particle in simple harmonic motion is \(8 \mathrm{~s}\). At \(t=0\), it is at the mean position. The ratio of the distances travelled by it in the first and second seconds isTS EAMCET 2012 Medium