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Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the (a) what ist the net charge inside the box (b) if the net outward flux through the surface of the box wre zero could you conclude that there were no charges inside the box why or why not

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zero the number of lines entering the cube is the same as the number of lines leaving the cube
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Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is 8.0 xx 10^3 Nm^2//C . (a) What is the net charge inside the box ? (b) If the net outward flux through the surface of the box were zero, could you conclude that there were no charges inside the box ? Why or Why not ?

A point charge of 2.0 mu c is at the centre of a cubic gaussian surface 9.0 cm on edge what is the net electric flux through the surface

A point charge of 2.0 muC is at the centre of a cubic Gaussian surface 9.0 cm on edge. What is the net electric flux through the surface ?

An electric field is uniform and in the positive x direction for positive x and uniform with the same magnitude but in the negative x direction for negative x. It is given that E = 200 hati N//C and E = - 200 hati N/C for x lt 0 . A right circular cylinder of length 20 cm and radius 5 cm has its centre at the origin and its axis along the *-axis so that one face is at jc = + 10 cm and the other is at x = - 10 cm as shown in figure, (a) What is the net outward flux through each flat face ? (b) What is the flux through the side of the cylinder ? (c) What is the net outward flux through the cylinder ? (d) What is the net charge inside the cylinder ?

An electric field is uniform and in the positive x direction for postive x and uniform with the same magnitude but in the negative x direction x it is given that E=200 I N/C length 20 cm and radius 5 cm has its centre at the origin and its axis x =-10 cm (a) what is the net ioutward flux through each flate face (b) what is the flux through the side of the cylinder (C ) what is the net outward flux thoght the cylinder (d) what is the net charge inside the cylinder

When a 10muC charge is enclosed by a closed surface, the flux passing through the surface is phi . Now another -10muC charge is placed inside the closed surface, then the flux passing through the surface is.........

The electric field in the region of the space is vecE = (5hati + 2hatj + 3hatk)NC^(-1) . The electric flux passing through a surface of area 50m^2 placed in X-Y plane inside the electric field is.......

A charge Q is uniformly distributed over a rod of length l . Consider a hypothetical cube of edge l with the centre of the cube at one end of the rod. Find the minimum possible flux of the electric field through the entire surface of the cube.

Give reason : "If net flux assocaited with closec surface is zero, then net charge enclosed b that surface is zero."

NCERT GUJARATI-ELECTRIC CHARGES AND FIELDS -EXERCISES
  1. Consider a uniform electric field E=3xx10^(3) hati N/C (a) what is ...

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  2. What is the net flux of the uniform electric field of exercise th...

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  3. Careful measurement of the electric field at the surface of a black b...

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  4. A point charge + mu c is a distance 5 cm directly above the centre of...

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  5. A point charge of 2.0 mu c is at the centre of a cubic gaussian ...

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  6. A point charge causes an elelctric flux of -1.0 xx10^(3) Nm^(2) /C to...

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  7. A conducting sphere of radius 10 cm has an unknown charge if the elect...

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  8. A uniformly charged conducting sphere of 2.4 m diameter has a (a)...

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  9. An infinite line charge produces a field of 9xx10^(4) N/C at a dis...

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  10. Two large thin metal plates are parallel and close to each other on...

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  11. An oil drop of 12 exess electrons is held stationary under a consta...

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  12. Which among the curves cannot possibly represent electrostatic fie...

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  13. In a certain region of space electric field is along the z direction...

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  14. (a) a conductor a with a cavity given a charge Q show that the enti...

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  15. A hollow charged conductor has a tiny hole cut in to its surface sho...

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  16. Obtain the formula for the electric field due to a long thin wire ...

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  17. It is now established that protons and neutrons are themselves bui...

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  18. (a) consider an arbitrary electrostic field configuration a small tes...

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  19. A particle of mass m and charge enters the region between the two char...

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  20. Suppose that the particle in exercise in 1.33 an electron projecrt...

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