Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Electrostatics question

2019 · 10 Jan · Shift 1 · Q46
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Electrostatics
  5. /2019 · 10 Jan · Shift 1 · Q46

Electrostatics question

2019 · 10 Jan · Shift 1 · Q46

JEE MainPhysicsElectrostaticsMCQ+4 / −1
A charge Q is distributed over three concentric spherical shells of radii a, b, c (a < b < c) such that their surface charge densities are equal to one another. The total potential at a point at distance r from their common centre, where r < a, would be -
  1. A
    Q(a2+b2+c2)4πε0(a3+b3+c3){{Q\left( {{a^2} + {b^2} + {c^2}} \right)} \over {4\pi {\varepsilon _0}\left( {{a^3} + {b^3} + {c^3}} \right)}}4πε0​(a3+b3+c3)Q(a2+b2+c2)​
  2. B
    Q4πε0(a+b+c){Q \over {4\pi {\varepsilon _0}\left( {a + b + c} \right)}}4πε0​(a+b+c)Q​
  3. C
    Q12πε0ab+bc+caabc{Q \over {12\pi {\varepsilon _0}}}{{ab + bc + ca} \over {abc}}12πε0​Q​abcab+bc+ca​
  4. D
    Q(a+b+c)4πε0(a2+b2+c2){{Q\left( {a + b + c} \right)} \over {4\pi {\varepsilon _0}\left( {{a^2} + {b^2} + {c^2}} \right)}}4πε0​(a2+b2+c2)Q(a+b+c)​
PreviousNext

More from Electrostatics

  • Two electric dipoles, A, B with respective dipole moments dA​=−4qai and dB​=−2qai are placed on the x-axis with a separation R, as shown in the figure. The distance from A at which both of… Includes diagram2019 · MCQ
  • Charges –q and +q located at A and B, respectively, constitude an electric dipole. Distance AB = 2a, O is the mid point of the dipole and OP is perpendicular to AB. A charge Q is placed at P where OP = y and y >> 2a. The charge Q… Includes diagram2019 · MCQ
  • Four equal point charges Q each are placed in the xy plane at (0, 2), (4, 2), (4, –2) and (0, –2). The work required to put a fifth charge Q at the origin of the coordinate system will be -2019 · MCQ
  • The given graph shows variation (with distance r form centre) of : Includes diagram2019 · MCQ
  • Three charges Q, + q and + q are placed at the vertices of a right-angle isosceles triangle as shown below. The net electrostatic energy of the configuration is zero, if the value of Q is : Includes diagram2019 · MCQ
  • An electric field of 1000 V/m is applied to an electric dipole at angle of 45o. The value of electric dipole moment is 10–29 C.m. What is the potential energy of the electric dipole?2019 · MCQ
  • A point dipole p​=−p0​x is kept at the origin. The potential and electric field due to this dipole on the y-axis at a distance d are, respectively: (Take V= 0 at infinity)2019 · MCQ
  • Shown in the figure is a shell made of a conductor. It has inner radius a and outer radius b, and carries charge Q. At its centre is a dipole P as shown. In this case : Includes diagram2019 · MCQ