Why the interior of a conductor can have no excess charge in?

When forces of internal elec. field and external electric field are equal, they cancel each other since they are in opposite directions. Thus a static charge distribution occurs and there is NO EXCESS CHARGE inside a conductor.

Why do two electric field lines not intersect each other?

Electric lines of force never intersect because, at the point of intersection, two tangents can be drawn to the two lines of force. This means two directions of the electric field at the point of intersection, which is not possible.

Can electric potential be zero if electric field is zero?

Yes, electric potential can be zero at a point even when the electric field is not zero at that point. At the midpoint of the charges of the electric dipole, the electric field due to the charges is non zero, but the electric potential is zero.

Why do electric field lines never intersect each other in class 12?

If two electric lines intersect with other electric lines then there are two tangents at that point. And due to two different tangents there are two different directions of electric field at that point. Hence, electric field lines never intersect each other is true and this is also a property of electric field lines.

Why do electric field lines never 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.

Why is the electric field inside a conductor zero?

So the free charge inside the conductor is zero. So the field in it is caused by charges on the surface. Since charges are of the same nature and distribution is UNIFORM, the electric fields cancel each other. Consider a Gaussian surface inside the conductor. Charge enclosed by it is zero (charge resides only on surface).

Why do electric fields cancel each other out inside a conductor?

3 Answers. So the free charge inside the conductor is zero. So the field in it is caused by charges on the surface. Since charges are of the same nature and distribution is UNIFORM, the electric fields cancel each other. Consider a Gaussian surface inside the conductor. Charge enclosed by it is zero (charge resides only on surface).

What is free electrons in conductor?

In conductor , electrons of the outermost shell of atoms can move freely through the conductor. These electrons are called free electrons. Now, let an external electric field E is applied on the conductor. So, there will be some electric field line inside the conductor.

What is the electric flux of a conductor with zero charge?

Since charges are of the same nature and distribution is UNIFORM, the electric fields cancel each other. Consider a Gaussian surface inside the conductor. Charge enclosed by it is zero (charge resides only on surface). Therefore electric flux =0 Furthermore, electric flux = electric field * area. Since area cannot be zero, electric field is zero