Electrostatic potential and capacitance

Question 1

what is electrostatic potential difference

Answer 1

EP at any point in a region of Electrostatic field is the amount of work done in carrying a unit +ve charge from infinity to that point against the E force of that field without any change in KE

Question 2

Si unit of Electrostatic potential

Answer 2

volt
1v = 1J/1C

SCALAR QUANTITY
[ML2T-3A-1]

Question 3

eLECTROSTATIC FORCE DOESN’T depend upon path

Answer 3

they are conservative force

Question 4

the observational point P lies on equatorial line of dipole then V =

Answer 4

since cos90 is 0
V = 0

Question 5

potential due to dipole depends on

Answer 5

1. r
2. angle b/w position vector and dipole moment vector p

Question 6

Equipotential surface

Answer 6

an equipotential surface is that surface at every point of which electric potential is the same

Question 7

Properties of EP SURFACE

Answer 7

1. potential at any 2 EP SURFACE is o
2. no work is done in moving the test charge from one point of EP SURFACE to another
3. for any charge config EP surface is normal to the electric field
4. 2 EP surfaces can never intersect
5. in region of strong electric field equipotential are close together whereas in weak electric field the EP surface are far apart
6. in uniform EF the EP surface is parallel planes perpendicular to electric field lines

Question 8

relation between Electric field and Potential

Answer 8

E= -dv/dr

Question 9

If dv is constant what can u say about Electric field

Answer 9

E = 0

Question 10

If electric field is 0. will the electric potential be necessarily 0 at that point?

Answer 10

No, the electric potential will not necessarily be zero. Rather, the electric potential can be zero or constant in the region around that point. this follows from E= -dv/dr