Q. Electric flux through both the sides of a surface is equal.
Q. Charge Q is placed inside cone as shown in figure such that θ=60∘. Flux of electric field associated with curved surface of cone is.
- 3 Q4 ε0
Q. A long string with a charge of λ per unit length passes through an imaginary cube of edge l. The maximum possible flux of the electric field through the cube will be
- √2 λ lϵ0
- 6 λ l2ϵ0
- √3 λ lϵ0
- λ lϵ0
Q. Consider an infinite line charge having uniform linear charge density and passing through the axis of a cylinder. What will be the effect on the flux passing through the cylinder if the portions of the line charge outside the cylinder is removed.
- remains same
- cannot say
In a region where intensity of electric field is 5NC−1 , 40 lines of electric force are crossing per square metre. The number of lines crossing per square metre where intensity of electric field is 10NC−1 will be :
Q. Change Q1 and Q2 lie inside and outside respectively of a closed surface S. Let E be the field at any point on S ϕ be the flux of E (electric field) over S.
|(P)||If Q1=0 and Q2≠0 then||(1)||Both E and ϕ will change|
|(Q)||If Q1≠0 and Q2=0 then||(2)||E≠0 and ϕ≠0|
|(R)||If Q2 changes||(3)||net electric field will change but ϕ will not change|
|(S)||If Q1 changes||(4)||E≠0 but ϕ=0|
- P - 4, Q - 2, R - 3, S - 1
- P - 1, Q - 2, R - 4, S - 3
- P - 2, Q - 4, R - 1, S - 3
- P - 3, Q - 4, R - 1, S - 2
Q. A charge q is located at the centre of a cube. The electric flux through any face is :
Q. Calculate the net flux emerging from given enclosed surface −Nm2C−1
Q. The electric flux passing through a hemispherical surface of radius R placed in an electric field E with its axis parallel to the filed is :
Q. A cylinder of radius R and length L is placed in a uniform electric field E parallel to the cylinder axis. The total flux for the surface of the cylinder is given by :