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A charged ball B hangs from a silk threa...

A charged ball B hangs from a silk thread S, which makes an angle `theta` with a large charged conducting sheet P as shown in Fig. Show that the surface charge density of the sheet is proportional to `tan theta`.

A

cos `theta`

B

`cot theta`

C

`sin theta`

D

`tan theta`

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MODERN PUBLICATION-TEXUAL QUESTIONS -EXERCISE
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  2. An electric dipoole, when placed at an angle 30^@ with a uniform elect...

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  3. A charged ball B hangs from a silk thread S, which makes an angle thet...

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  4. A charged particle q is placed at the centre O of the cube (ABCDEFGH) ...

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  5. Two charged conducting spheres A and B having radii a and b connected ...

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  6. On moving a charge of 20 C by 2 cm, 2 J of work is done. Then, the pot...

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  7. The potential at a point at distance x from some charge placed on X-ax...

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  8. Capacitance (in F) of a spherical conductor of radius 1 m is

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  9. A sheet of aluminium foil of negligible thickness is introduced betwee...

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  10. A parallel plate capacitor is made by stacking n equally spaced plates...

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  11. If n capacitors are connected in parallel to a V volt source, then tot...

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  12. A battery is used to charge a parallel plate capacitor till the potent...

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  13. A parallel plate capacitor with air between the plates has capacitance...

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  14. A fully charged capacitor has a capacitance 'C'. It is discharged thro...

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  15. The unit of permittivity of free space (E0) is :

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  16. When air is replaced by a dielectric medium of dielectric constant K, ...

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  17. A charge q is placed at the centre of the line joining two exactly equ...

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  18. Point charges + 4q, -q and +4 q are kept on the X-axis at points x = 0...

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  19. There is an electric field E in x-direction. If the work done on movin...

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