The mutual repulsion of excess positive charges on a spherical conductor distributes them uniformly on its surface. The resulting electric field is perpendicular to the surface and zero inside.
Why electric field lines are perpendicular to the surface?
Since the electric field lines are directed radially away from the charge, hence they are opposite to the equipotential lines. Therefore, the electric field is perpendicular to the equipotential surface.
Why must electric field at the surface of a charged conductor be perpendicular to every point on it?
Electric field is defined as the gradient of potential and the surface of a conductor has a constant potential. Therefore, there is no field along the surface of the conductor and hence the electrostatic field at the surface of a charged conductor should be Normal to the surface at every point.
Are electric field lines always perpendicular to the surface?
The electric force, and thus the electric field, is always directed perpendicular to the surface of an object. … This occurs when drawing electric field lines for configurations of two or more charges as discussed in the section below.
Why is electric field discontinuous across the surface of a conductor?
The magnitude of the electric field due to a charged spherical shell is zero inside it, maximum on its surface and then keeps decreasing as 1/r2. So the value of electric field does not vary smoothly from r = 0 to r = ? and thus it is discontinuous.
Why electric field lines do not pass through conductor?
The net electric field inside a conductor is zero. Therefore, the electric field lines do not pass through a conductor.
Why do electric field lines do not form closed loops?
If the electric field lines form a closed loop, these lines must originate and terminate on the same charge which is not possible because electric field lines always move from positive to negative. … Therefore, we say electrostatic field lines never form closed loops.
Which statements must be true about the surface of a charged conductor in which no charge is moving?
Which statements must be true about the surface of a charged conductor in which no charge is moving? The electric field is zero at the surface. The electric potential of the surface is zero.
Why should electrostatic field be zero inside a charged conductor?
The electrostatic field should be zero inside a conductor because in a conductor, the charges are present on the surface. Therefore, the charge inside should be zero. Also, according to the Gauss theorem, the electrostatic field is zero.
What happen if electric field lines is not perpendicular to the surface of the conduction?
Figure 16.16: If electric field lines are not perpendicular to the surface of a conductor, the charges at the surface redistribute themselves until the field lines are perpendicular.
Can electric field lines go through a conductor?
As they’ve explained, electric field lines cannot pass through the conductor for then E will either form a closed loop (cannot happen cause curl E=0) or it will pass from the inner surface to the outer and there will be potential difference which is a contradiction (Conductors have equipotential surfaces).
Is electric field continuous across the surface of the conductor?
We know that electric field is discontinuous across the surface of a charged conductor.
Why electric field is not continuous?
Electric field lines are continuos curves. They start from a positively charged body and ends at a negatively charged body. No electric lines of force exist inside the charged body. Thus electrostatic field lines are continuous but do not form closed loops.
Which among the following electric field potential is are discontinuous across the surface of a charged conductor?
Electric field is discontinuous across the surface of charged conductor.