TS EAMCET · Physics · Electrostatics
The work done to assemble the three charges in a configuration as shown in the figure below is

- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Let q1=-q, q2=q, q3=-2q, r.12=r23=r13=a Work done W=14πε0q1q2r12+q2q3r23+q1q3r13 =-q2-2q2+2q2a14πε0=-q24πε0a
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 is true in the case of an adiabatic process, where \(\gamma=C_p / C_V\) ?TS EAMCET 2008 Easy
- The force acting on a current carrying wire joining two fixed points and in a uniform magnetic fieldTS EAMCET 2021 Medium
- A conductor of length 1.5 m and area of cross-section \(3 \times 10^{-5} \mathrm{~m}^2\) has electrical resistance of \(15 \Omega\). The current density in the conductor for an electric field of \(21 \mathrm{Vm}^{-1}\) isTS EAMCET 2024 Medium
- The maximum length of water column that can stay without falling in a vertically held capillary tube of diameter 1 mm and open at both the ends is
(Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) and surface tension of water \(=0.07 \mathrm{Nm}^{-1}\) )TS EAMCET 2025 Medium - An aircraft is flying at a height of ' \(H\) ' above the ground and at a speed of ' \(V\) '. The maximum angle subtended at a ground observation point by the aircraft after time \(T\) isTS EAMCET 2022 Medium
- The highest temperature, density and pressure is found on Earth:TS EAMCET 2019 Easy
More PYQs from TS EAMCET
- In a double-slit experiment performed in air the angular width of a fringe is found to be \(0.15^{\circ}\) on a screen placed \(80 \mathrm{~cm}\) away. The wavelength of light used is \(490 \mathrm{~nm}\). The angular width of the fringe if the entire apparatus is immersed in medium of refractive index \(\frac{5}{3}\) isTS EAMCET 2022 Medium
- A one mole of ideal gas goes through a process in which pressure varies with volume as , where is a constant. The maximum attainable temperature by the ideal gas during this process is (All quantities are in units and is gas constant)TS EAMCET 2018 Medium
- The magnetic field at point \(P\) of given figure due to carrying of current \(I\) by a conductor of radius \(R\), is
TS EAMCET 2020 Easy - If the velocity of light \(C\), the gravitational constant \(G\) and Planck's constant \(h\) are chosen as the fundamental units, the dimension of density in the new system isTS EAMCET 2022 Hard
- A clock pendulum made of invar has a period of \(0.5 \mathrm{~s}\), at \(20^{\circ} \mathrm{C}\). If the clock is used in a climate where the temperature averages to \(30^{\circ} \mathrm{C}\), how much time does the clock lose in each oscillation? (For invar, \(\alpha=9 \times 10^{-7} /{ }^{\circ} \mathrm{C}\), \(g=\) constant \()\)TS EAMCET 2009 Easy
- The surface tension of 70 dynes \(/ \mathrm{cm}\) is equal toTS EAMCET 2020 Easy