Home
Class 12
PHYSICS
Careful measurement of the electric fiel...

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

Text Solution

Verified by Experts

zero the number of lines entering the cube is the same as the number of lines leaving the cube
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTRIC CHARGES AND FIELDS

    NCERT GUJARATI|Exercise EXERCISES|34 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NCERT GUJARATI|Exercise EXERCISES|41 Videos

  • ELECTROMAGNETIC INDUCTION

    NCERT GUJARATI|Exercise ADDITIONAL EXERCISES|7 Videos

Similar Questions

Explore conceptually related problems

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

Knowledge Check

  • 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 ………..

    A
    `4phi`
    B
    `phi`
    C
    `2phi`
    D
    zero

  • 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.........

    A
    `2phi`
    B
    `phi`
    C
    `4phi`
    D
    Zero

  • 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
    250 `Nm^(2)C^(-1)`
    B
    `150 Nm^(2)C^(-1)`
    C
    `100 Nm^(2)C^(-1)`
    D
    `200 Nm^(2)C^(-1)`

    • Similar Questions

    Explore conceptually related problems

    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

    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."

    Home
    Profile