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In the following graph , the magnitude o...

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

A

`5 V//m`

B

`2.5 V//m`

C

`1.25 V//m`

D

`10 V//m`

Text Solution

Verified by Experts

The correct Answer is:
1
The negative of slope of `V - r` graph gives electric field.
`E = -dV//dr`
`r = 0` to `r = 2m , E = - 5 V//m`
`r = 2m` to `r = 4m , E = 0`
`r = 4m` to `r = 8m , E = 2.5 V//m`
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CP SINGH-ELECTROSTATICS-Exercises
  1. In the following figure, equipotential lines are shown

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

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

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

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  5. In a uniform electric field ,

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  6. In a uniform electric field , equipotential surface must (i) be plan...

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  7. The electric potential V at any point x, y, z (all in meters) in space...

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  8. The electirc potential at a point (x, y, z) is given by V = -x^(2)y ...

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  9. An electric field E = (20hati + 30 hatj) N/C exists in the space. If t...

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  10. Electric potential is given by V = 6x - 8xy^(2) - 8y + 6yz - 4z^(2) ...

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  11. Two points are at distance a and b (a lt b) from a long string of char...

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  12. The electric potetnial in a region along x-axis varies with x accordin...

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  13. A non-conducting ring of radius 0.5 m carries a total charge of 1.11xx...

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  14. The electric potential decreases unifromly from 120 V to 80 V as one ...

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  15. A charge Q is placed at the centre of a spherical conducting shell. Ch...

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  16. A positive charge Q is placed at the centre O of a thin metalic spheri...

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  17. A spherical conductor A having charge Q lies inside a hollow spherical...

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  18. A spherical conductor A lies inside a hollow spherical conductor B. Ch...

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  19. A thin metallic spherical shell contains a charge Q on it. A point cha...

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  20. A thin metallic spherical shell contains a charge Q on it. A point cha...

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