Introducing Flux
Trending Questions
A solid sphere having a radius and uniform charge density . If a sphere of radius is carved out of it as shown in the figure. Find the ratio of the magnitude of electric field at point and
- L
- L2
- L3/2
- L1/2
- 8.15 Nm2/C
- 34.6 Nm2/C
- 17.3 Nm2/C
- 16.3 Nm2/C
- n1=n2
- n1<n2
- n1≤n2
- n1>n2
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1121995/original_2q.png)
- 4πr2E
- 38πr2E
- πr2E
- 2πr2E
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1135110/original_original_51.png)
- E02πR
- 2E0πR
- 2E0πR2
- E0πR2
- 2πRLE
- πR2E2
- πR2E
- 2πR2E
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1104271/original_2q.png)
- √2λ2πϵ0R
- λ√52πϵ0R
- λ2πϵ0R
- 0
- Qrr′+r
- Q(r+r′)r
- Qr′r′+r
- Q(r−r′)r′
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1143019/original_q11.png)
- ρR2εo
- 3ρlεo
- ρ(r1+r2)3εo
- ρl3εo
Flux can only be defined for a planar surface.
True
False
If →E = 2i +3j +4k and →A = 3i +2j +4k. What is the flux of the given →E through the area?
21Nm2/C
28Nm2/C
23Nm2/C
30Nm2/C
Axis of a hollow cone shown in figure is vertical. It’s base radius is ‘R’. It is kept in a uniform electric field E parallel to its axis.
The magnitude of flux through curved part of the cone?
πR2E
πR2E2
zero
Non−zero
- 25
- 25√2
- 25√2
- zero
figure. The electric field is not uniform, but it is given by →E=(−5.00NC−1)x^i+(3.00 NC−1)z^k.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/747235/original_original_Q02.png)
The surfaces that have zero flux are
- S2, S4 and S5
- S1, S3, S4 and S6
- S1, S2 and S3
- S2, S3 and S4
A large plane charge sheet having surface charge density σ=2.0×10−6 Cm−2 lies in the x-y plane. Find the flux of the electric field through a circular area of radius 1 cm lying completely in the region where x, y, z are all positive and with its normal making an angle of 60∘ with the z-axis. (Given that the field due to infinite charged sheet is σ2ϵ0 where σ = surface charge density. Also note that it is perpendicular to the sheet and is constant for all points from the sheet.)
35 Nm2C
35 CNm2
17.5 Nm2C
17.5 CNm2
The S.I. unit of electric flux is
Weber
Newton per coulomb
Joule per coulomb