Equipotential at a great distance from a collection of charges whose total sum is not zero are approximately

Figure 2.2 shows some equipotential lines distributed in space. A charged object is moved from point A to point B.

The electrostatic potential on the surface of a charged conducting sphere is 100V. Two statements are made in this regard:

S₁: At any point inside the sphere, electric intensity is zero.

S₂: At any point inside the sphere, the electrostatic potential is 100V.

Which of the following is a correct statement?

A parallel plate capacitor is made of two dielectric blocks in series. One of the blocks has thickness d₁ and dielectric constant k₁ and the other has thickness d₂ and dielectric constant k₂ as shown in Fig. 2.3. This arrangement can be thought as a dielectric slab of thickness d (= d₁+d₂) and effective dielectric constant k. The k is

Consider a uniform electric field in the direction. The potential is a constant