How does the electric field at a point vary with the distance from a point electric charge?
The electric field varies inversely as the square of the distance from the point charge.
How the electric field E depends upon the distance r due to an infinitely long thin straight charged wire?
Electric field due to an infinitely long straight uniformly charged wire : … By symmetry, the magnitude of the electric field will be the same at all points on the curved surface of the cylinder and directed radially outward. E and ds are along the same direction.
How does the electric field vary with distance?
The strength of an electric field as created by source charge Q is inversely related to square of the distance from the source. This is known as an inverse square law. … If the separation distance increases by a factor of 4, the electric field strength decreases by a factor of 16 (4^2).
What is the direction of electric field due to uniformly charged infinite wire?
The direction of electric field is radially outward if linear charge density is positive. On the other hand, it will be radially inward of the linear charge density is negative.
What are the applications of Gauss theorem?
Gauss’s Law can be used to solve complex electrostatic problems involving unique symmetries like cylindrical, spherical or planar symmetry. … Gauss’s Law can be used to simplify evaluation of electric field in a simple way.
What is the expression for electric field due to a uniformly charged infinite plane sheet?
E=σ2ϵ0. This is independent of the distance of P from the infinite charged sheet. The electric field lines are uniform parallel lines extending to infinity.
How does electric field change for a thick sheet of charge?
For an infinite sheet of charge, the electric field will be perpendicular to the surface. Therefore only the ends of a cylindrical Gaussian surface will contribute to the electric flux . In this case a cylindrical Gaussian surface perpendicular to the charge sheet is used. Hope this will help you!
What does electric field depend on?
The magnitude of the electric field around an electric charge, considered as source of the electric field, depends on how the charge is distributed in space. … The value of the electric field has dimensions of force per unit charge.
What are the magnitude and direction of the electric field?
The electric field direction points straight away from a positive point charge, and straight at a negative point charge. The magnitude of the electric field falls off as 1 / r 2 1/r^2 1/r21, slash, r, squared going away from the point charge.