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A wheel having mass mu has charges +q an...

A wheel having mass `mu` has charges `+q and -q` on diametrically opposite points. It remains in equilibrium on a rough inclined plane in the presence of uniform vertical electric field E =

A

`(mg)/(q)`

B

`(mg)/(2q)`

C

`(mg tan theta)/(2q)`

D

none

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-ELECTROSTATICS-ADDITIONAL PRACTICE EXERCISE (LEVEL - I (MAIN) (STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  2. A non conducting ring of radius R has uniformly distributed positive c...

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  5. A planet of small mass m moves around the sun of mass M, along an elli...

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  6. Two identical balls each having a density rho are suspended from a com...

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  7. A horizontal electric field (E = (mg /q) exist in space, as shown in (...

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  8. Electric field given by the vector vec E = x hat i + y hat j is presen...

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  9. A unit positive point charge of mass m is projected with a velocity V ...

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  10. A plane pi passes through the point (1,1,1) and is parallel to the vec...

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  11. A particle of mass m and charge Q is placed in an electric filed W whi...

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  12. Four equal positive charge are fixed at the vertical of a square of si...

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  13. Each of the two long parallel threads carries a uniform lambda per uni...

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  14. Mid way between two fixed equal and similar charges, we placed a third...

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  15. A ring of radius R is placed in the plane its centre at origin and its...

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  16. Select the correct statement : (Only force on a particle is due to ele...

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  17. Two identical point charges are placed separation of l. P is a point o...

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  18. If three uniform spheres, each having mass M and radius R, are kept in...

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  19. Two identical positive charges are fixed on the y-axis, at equal dista...

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  20. A very long straight uniformly charged thread carries a charge lambda ...

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