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Three small spheres are placed on the ci...

Three small spheres are placed on the circumference of a circle of radius r in such a way that an equilateral triangle is formed. If the charge of each sphere is q, the electric field intensity at the centre of the circle will be __________. [fill in the blanks]

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CHHAYA PUBLICATION-ELECTRIC FIELD-EXERCISE ( VERY SHORT ANSWER TYPE QUESTIONS )
  1. The electric field intensity at all points in a uniform electric field...

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  2. The field lines in a uniform electric field are lines. [Fill in the b...

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  3. Three small spheres are placed on the circumference of a circle of rad...

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  4. A few field lines moving from left converge on the right side. The ele...

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  5. The field lines of an isolated negative charge are radially . [fill in...

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  6. What is the ratio of the intensity of the electric field at a particlu...

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  7. How should an electric dipole be kept in an electric field so that no ...

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  8. Is the dipole moment a scalar or a vector quantity ?

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  9. What is the unit of dipole moment in SI ?

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  10. An electric dipole is inclined with a uniform electric field. State wh...

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  11. What is the resultant electric force on an electric dipole placed in a...

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  12. What is the dipole moment of a non-polar molecule ?

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  13. The torque acting on an electric dipole placed in a uniform electric f...

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  14. An electric dipole of moment p is placed in equilibrium position in a ...

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  15. If electric flux linked with a surface is maximum , what will be the a...

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  16. A square plate of side a is placed perpendicular to a uniform electric...

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  17. If a charge exists outside a closed surface, the net electric flux lin...

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  18. What is the intensity of the electric field inside a uniformly charged...

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  19. The direction of area vector is along the to the area. [Fill in the b...

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  20. The flux linked with a surface perpendicular to the field lines in an ...

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