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The electric field at the centre of a sq...

The electric field at the centre of a square having equal charge q at each of the coner (side of square a )

A

zero

B

4E

C

E

D

1/2E

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The correct Answer is:
A
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MOTION-ELECTROSTATICS-Exercise -1 (Objective Problems | NEET)
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  7. If mass of the electron = 9.1 xx 10^(–31) Kg. Charge on the electron =...

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  8. Five equal charges each of value q are placed at the corners of a reg...

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  9. Four charges +q, +q, -q, -q are fixed respectively at the corners of A...

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  11. A proton is first placed at A and then at B between the two plates of ...

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  12. A ring of radius R carries a uniformly distributed charge +Q. A point ...

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  13. A small circular ring has a uniform charge distribution. On a far-off ...

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  15. Which of the following statements concerning the electrostatics is cor...

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  17. Which one of the following diagrams shows the correct lines of force ?

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  18. Electric lines of forces -

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  19. Figure shows the electric lines of force emerging from a charged body....

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  20. Two parallel plates of infinite dimensions are uniformly charged. The ...

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