JEE Questions for Physics Electrostatics Ii Quiz 6 - MCQExams.com

A long string with a charge of λ per unit length passes through an imaginary cube of edge l. The maximum possible flux of the electric field through the cube will be ...........

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  • 2)
    Physics-Electrostatics II-73421.png

  • Physics-Electrostatics II-73422.png

  • Physics-Electrostatics II-73423.png
Two Points P and Q are maintained at the Potentials of 10 v and –4 v, respectively. The work done in moving 100 electrons from P to Q is ..............

  • Physics-Electrostatics II-73425.png
  • 2)
    Physics-Electrostatics II-73426.png

  • Physics-Electrostatics II-73427.png

  • Physics-Electrostatics II-73428.png

Physics-Electrostatics II-73430.png
  • 8, along negative x – axis
  • 8, along positives x – axis
  • 16, along negative x – axis
  • 16, along positives x – axis

Physics-Electrostatics II-73432.png

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  • 2)
    Physics-Electrostatics II-73434.png

  • Physics-Electrostatics II-73435.png

  • Physics-Electrostatics II-73436.png
Three charges 2q, –q, –q are located at the vertices of an equilateral triangle. At the centre of the triangle.
  • The Field is Zero but Potential is non – zero
  • The Field is non - Zero but Potential is zero
  • Both field and Potential are Zero
  • Both field and Potential are non- Zero
In the electric field of a point charge q, a certain charge is carried from point A to B, C, D and E. Then the work done ....
Physics-Electrostatics II-73439.png
  • Is least along the Path AB
  • Is least along the Path AD
  • Is Zero along all the Path AB, AC, and
  • Is least along AE

Physics-Electrostatics II-73440.png

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  • 2)
    Physics-Electrostatics II-73442.png

  • Physics-Electrostatics II-73443.png

  • Physics-Electrostatics II-73444.png

Physics-Electrostatics II-73446.png

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  • 2)
    Physics-Electrostatics II-73448.png

  • Physics-Electrostatics II-73449.png

  • Physics-Electrostatics II-73450.png
Three particles, each having a charge of 10c are placed at the corners of an equilateral triangle of side 10 cm. The electrostatic potential energy of the system is
Physics-Electrostatics II-73452.png
  • 100 J
  • 27 J
  • Zero
  • Infinite
Four equal charges Q are placed at the four corners of a square of each side is ‘a’. Work done in removing a charge – Q from its centre to infinity is ...
  • 0
  • 2)
    Physics-Electrostatics II-73454.png

  • Physics-Electrostatics II-73455.png

  • Physics-Electrostatics II-73456.png
Two charged spheres of radii R1 and R2 having equal surface charge density. The ratio of their potential is ...

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  • 2)
    Physics-Electrostatics II-73459.png

  • Physics-Electrostatics II-73460.png

  • Physics-Electrostatics II-73461.png
Two equal charges q are placed at a distance of 2a and a third charge –2q is placed at the midpoint. The potential energy of the system is ....

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  • 2)
    Physics-Electrostatics II-73464.png

  • Physics-Electrostatics II-73465.png

  • Physics-Electrostatics II-73466.png

Physics-Electrostatics II-73468.png
  • 9 J
  • 2)
    Physics-Electrostatics II-73469.png

  • Physics-Electrostatics II-73470.png

  • Physics-Electrostatics II-73471.png

Physics-Electrostatics II-73473.png

  • Physics-Electrostatics II-73474.png
  • 2)
    Physics-Electrostatics II-73475.png

  • Physics-Electrostatics II-73476.png

  • Physics-Electrostatics II-73477.png
A sphere of radius 1cm has potential of 8000 v, then energy density near its surface will be ...

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  • 2)
    Physics-Electrostatics II-73480.png

  • Physics-Electrostatics II-73481.png

  • Physics-Electrostatics II-73482.png
If a charged spherical conductor of radius 10cm has potential v at a point distant 5 cm from its centre, then the potential at a point distant 15cm from the centre will be .....

  • Physics-Electrostatics II-73484.png
  • 2)
    Physics-Electrostatics II-73485.png
  • 3V

  • Physics-Electrostatics II-73486.png
Electric charges of +10c, 5c, –3c and 8c are placed at the corners of a square of side √2 m the potential at the centre of the square is ......
  • 1.8 V
  • 2)
    Physics-Electrostatics II-73488.png

  • Physics-Electrostatics II-73489.png

  • Physics-Electrostatics II-73490.png
Two positive point charges of 12c and 8c are 10 cm apart each other. The work done in bringing them 4cm closer is .....
  • 5.8 J
  • 13 eV
  • 5.8 eV
  • 13 J

Physics-Electrostatics II-73493.png

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  • 2)
    Physics-Electrostatics II-73495.png

  • Physics-Electrostatics II-73496.png

  • Physics-Electrostatics II-73497.png
If an electron moves from rest from a point at which potential is 50 volt to another point at which potential is 70 volt, then its kinetic energy in the final state will be .....
  • 1 N
  • 2)
    Physics-Electrostatics II-73499.png

  • Physics-Electrostatics II-73500.png
  • 1 dyne
Three charges Q, + q and + q are placed at the vertices of a right-angled triangle as shown. The net electrostatic energy of the configuration is zero if Q is equal to .....
Physics-Electrostatics II-73502.png

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    Physics-Electrostatics II-73504.png

  • Physics-Electrostatics II-73505.png

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Two electric charges 12c and –6c are placed 20cm apart in air. There will be a point P on the line joining these charges and outside the region between them, at which the electric potential is zero. The distance of P from –6c charge is ........
  • 0.20 m
  • 0.10 m
  • 0.25 m
  • 0.15 m

Physics-Electrostatics II-73509.png
  • 5.5 J
  • 2.8 J
  • 3.5 J
  • 4.5 J
4 Points charges each +q is placed on the circumference of a circle of diameter 2d in such a way that they form a square. The potential at the centre is ......
  • 0
  • 2)
    Physics-Electrostatics II-73510.png

  • Physics-Electrostatics II-73511.png

  • Physics-Electrostatics II-73512.png
Three identical charges each of 2c are placed at the vertices of a triangle ABC as shown in the figure. If AB + AC = 12 cm and AB . AC = 32cm2, the potential energy of the charge at A is .....
  • 3.15 J
  • 1.53 J
  • 5.31 J
  • 1.35 J
A ball of mass 1 gm and charge 10–8 c moves from a point A, where the potential is 600 volt to the point B where the potential is zero. Velocity of the ball of the point B is 20cm/s. The velocity of the ball at the point A will be .....

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  • 2)
    Physics-Electrostatics II-73515.png

  • Physics-Electrostatics II-73516.png

  • Physics-Electrostatics II-73517.png
Three charges Q, +q and +q are placed at the vertices of an equilateral triangle of side l as shown in the figure. It the net electrostatic energy of the system is zero, then Q is equal
Physics-Electrostatics II-73519.png

  • Physics-Electrostatics II-73520.png
  • 2)
    Physics-Electrostatics II-73521.png
  • Zero

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  • 2)
    Physics-Electrostatics II-73526.png
  • 7

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A small conducting sphere of radius r is lying concentrically inside a bigger hollow conducting sphere of radius R. The bigger and smaller sphere are charged with Q and q (Q > q) and are insulated from each other. The potential difference between the spheres will be ......

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    Physics-Electrostatics II-73530.png

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If 3 charges are placed at the vertices of equilateral triangle of charge ‘q’ each. What is the net potential energy, if the side of equilateral triangle is l cm.

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