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A positively charged thin metal ring of radius R is fixed in the xy plane with its centre at the origin O. A negatively charged particle P is released from rest at the point `(0, 0, z_0)` where `z_0gt0`. Then the motion of P is

A

periodic , for all value of `z_(0)` satisfying `0 lt z_(0) lt oo`

B

simple harmonic , for all value of `z_(0)` satisfying `0 lt z_(0) le R`

C

approximately simple harmonic ,provided `z_(0) lt lt R`

D

such that `P` crosses `O` and continues to move along the negative `z`-axis towards `z = -oo`

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CP SINGH-ELECTROSTATICS-Exercises
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  2. In the above question , the nature of motion of the test charge is

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  3. A positively charged thin metal ring of radius R is fixed in the xy pl...

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  4. A given charge is situated at a certain distance from an electric dipo...

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  5. A and B are two points on the axis and the perpendicular bisector, res...

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  6. An electric dipole is kept in non-unifrom electric field. It experienc...

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  7. An electric dipole is placed along x-axis with its centre at origin:

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  8. An electric dipole is placed at the origin O and is directed along the...

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  9. The point charges + q, -2q and + q are placed at point (x = 0, y = a, ...

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  10. An electric dipole moment p is placed in an electric field of intensit...

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  11. An electric dipole is put in north-south direction in sphere filled wi...

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  12. An electric dipole of moment vecp is placed normal to the lines of for...

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  13. An electric dipole has the magnitude of its charge as q and its dipole...

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  14. Two short dipoles , each of dipole moment P are placed at a large sepa...

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  15. The electric field at the origin is along the positive x-axis. A small...

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  16. Which of the following is correct regarding equipotential surface ?

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  17. In the following figure, equipotential lines are shown

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  18. Some equipotential surfaces are shown in figure . The magnitude and ...

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  19. In the following graph , the magnitude of maximum electric field is

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  20. The electric field and the electric potential at a point are E and V r...

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