Home
Class 12
PHYSICS
A point charge +20muC is at a distance 6...

A point charge `+20muC is at a distance 6 cm directly above the centre of a square of side 12 cm as shown is figure. The magnitude of electric flux through the square is

A

`2.5xx10^(6)Nm^(2)C^(-1)`

B

`3.8xx10^(5)Nm^(2)C^(-1)`

C

`4.2xx10^(5)Nm^(2)C^(-1)`

D

`2.9xx10^(6)Nm^(2)C^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
From figure, it is clear that square ABCD is one of the six faces of a cube of side 12 cm.
By Gauss's theorem, total electric flux through all the six faces of the cube = `q/epsilon_(0)`
`therefore" "` Electric flux through the square
`phi=1/6q/epsilon_(0)=1/6xx(20xx10^(-6))/(8.85xx10^(-12))=3.8xx10^(5)Nm^(2)C^(-1)`
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CHARGES AND FIELDS

    NCERT FINGERTIPS ENGLISH|Exercise Application Of Gauss Law|9 Videos

  • ELECTRIC CHARGES AND FIELDS

    NCERT FINGERTIPS ENGLISH|Exercise HOTS|8 Videos

  • ELECTRIC CHARGES AND FIELDS

    NCERT FINGERTIPS ENGLISH|Exercise Continuous Charge Distribution|5 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NCERT FINGERTIPS ENGLISH|Exercise Assertion And Reason|15 Videos

  • ELECTROMAGNETIC INDUCTION

    NCERT FINGERTIPS ENGLISH|Exercise NCERT Exemplar|6 Videos

Similar Questions

Explore conceptually related problems

A point charge +10 mu C is at distance of 5cm directly above the center of a square of side 10 cm as shown in Fig. What is the magnitude of the electric flux through the square ? (Hint. Think of the square of the square as one face of a cube with edge 10 cm)

A point charge of +6 muC is placed at a distance 20 cm directly above the centre of a square of side 40 cm . The magnitude of the flux through the square is

A point charge q is placed at a distance a//2 directly above the centre of a square of side a . The electric flux through the square is

Define electric flux. Is is the scalar or a vector quantity? A point charge q is at a distance of d//2 directly above the centre of a square of side d, as shown in the figure. Use Gauss's law to obtain the expression for the electric flux through the square.

A charge Q is placed at a distance alpha/2 above the centre of a horizontal, square surface of edge a as shown in figure (30-E1). Find the flux of the electric field through the square surface.

A charge Q is placed at a distance a/2 above the centre of a horizontal, spuare surface of edge a as shown in figure (30-E1). Find the flux of the electric field through the square surface.

Four point charges +q,+q,-q and -q are placed on the corners of a square of side length 'a' as shown in the figure. The magnitude of electric field at a point which is at a distance x (gt gt a) from the centre along a line perpendicular to the plane of the square and passing through the centre is

Four charges are arranged at the corners of a square as shown in the figure. The direction of electric field at the centre of the square is along

A charge 10 muC is placed at the centre of a hemisphere of radius R = 10 cm as shown. The electric flux through the hemisphere (in MKS units)is

Six point charges are arrange at the vertices of a regular hexagon of side length a (shown in figure). Find the magnitude of electric field at the centre of regular hexagon.