Equipotential Surfaces
Trending Questions
Q.
Why electric field is perpendicular to the equipotential surface?
Q. Two point charges +q and −q are held fixed at (−a, 0) and (a, 0) respectively of a x−y coordinate system, then
- →E at all points on the y− axis is along ^i
- the electric field →E at all points on the x− axis has same direction
- →E at all points on the y− axis is along ^j
- →E at all points on the y− axis is along −^i
Q. If a unit positive charge is taken from one point to another over an equipotential surface, then
- Work is done on the charge
- Work is done by the charge
- Work done is constant
- No work is done
Q. A conductor lies in an electric field. If a charge moves on the surface, what is the work done on the charge?
- Depends on the force and distance.
- Zero
- Not enough information
- A charge cannot move on a conductor.
Q. Three charges +Q1, +Q2 and q are placed on a straight line such that q is somewhere in between +Q1 and +Q2. If this system of charges is in equilibrium, what should be the magnitude and sign of charge q ?
- Q1Q2(√Q1+√Q2)2, +ve
- Q1+Q22, −ve
- Q1Q2(√Q1+√Q2)2, −ve
- Q1+Q22, +ve
Q. In moving from A to B along an electric field line, the work done by the electric field on an electron is 6.4×10−19 J. If ϕ1 and ϕ2 are equipotential surfaces, then the potential difference VC - VA
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1131677/original_elec_1.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1131677/original_elec_1.png)
- 6.4 V
- zero
- −4 V
- 4 V
Q. A metallic shell has a point charge ‘q’ kept inside its cavity. Which one of the following diagrams correctly represents the electric lines of forces